Open-Source Intelligence (OSINT) is a powerful asset in cybersecurity, providing insights into emerging threats, leaked credentials, and malicious activity across the Surface, Deep, and Dark Web. However, many organisations struggle to operationalise OSINT effectively—collecting vast amounts of data but failing to translate it into meaningful action.
Without a clear strategy, OSINT risks becoming an overwhelming information stream rather than a practical tool for threat intelligence and response. To maximise its value, security teams must structure their OSINT collection, verify sources, and integrate findings into their wider cybersecurity framework.
In this blog, we’ll explore how to transform raw OSINT into actionable intelligence, covering key steps such as defining intelligence requirements, identifying reliable sources, validating data, and responding to threats. By adopting a structured approach and leveraging automation tools like SOS Intelligence, businesses can enhance their cyber defences and stay ahead of potential attacks.
The Intelligence Cycle: Transforming OSINT into Actionable Intelligence
To effectively operationalise OSINT, organisations must follow a structured approach to intelligence gathering, analysis, and dissemination. This structured methodology is known as the intelligence cycle, which consists of five key stages:
- Direction – Defining intelligence requirements based on security needs.
- Collection – Gathering relevant OSINT from multiple sources.
- Processing – Organising, filtering, and structuring raw data.
- Analysis – Interpreting data to produce actionable intelligence.
- Dissemination – Delivering intelligence to stakeholders in a usable format.

Understanding these stages helps security teams ensure that OSINT is not just collected, but effectively utilised in cybersecurity decision-making.
What is Information vs. Intelligence?
One of the biggest misconceptions about OSINT is that all collected data is immediately valuable. However, there is a crucial difference between information and intelligence:
- Information: Raw data collected from public sources (e.g., leaked credentials, malware hashes, threat actor forum posts). By itself, this data lacks context and reliability.
- Intelligence: Processed and analysed information that provides actionable insights (e.g., identifying a ransomware gang’s tactics, techniques, and procedures (TTPs) based on patterns in stolen data).
To bridge the gap between information and intelligence, organisations must follow a rigorous intelligence process.
Breaking Down the Intelligence Cycle
1. Direction: Defining Intelligence Requirements
Before OSINT collection begins, organisations must determine what intelligence they need. This step involves:
- Identifying key risks: Credential leaks, fraud attempts, insider threats, ransomware activity.
- Aligning intelligence efforts with business needs: Which threats pose the greatest risk to our organisation? What are our critical assets?
- Establishing intelligence priorities: Focusing on threats that directly impact security operations.
Example: A financial institution may prioritise OSINT collection on dark web forums where banking trojans and phishing kits are shared.
2. Collection: Gathering OSINT from Multiple Sources
Collection involves retrieving data from publicly available, deep web, and dark web sources. This can include:
- Surface Web: Public databases, news sites, social media, and forums.
- Deep Web: Subscription-based services, closed forums, restricted-access platforms.
- Dark Web: Criminal marketplaces, hacking forums, ransomware leak sites, stealer logs.
- Technical OSINT: Malware indicators, leaked credentials, threat intelligence feeds.
Automated tools like SOS Intelligence can streamline OSINT collection, enabling real-time threat monitoring.
3. Processing: Structuring and Filtering Data
Once data is collected, it must be cleaned, categorised, and structured to remove irrelevant information and identify meaningful patterns. Processing methods include:
- Parsing large datasets to extract key indicators (e.g., IP addresses, domain names, email addresses).
- Cross-referencing leaks with known threat intelligence feeds.
- Using machine learning to classify phishing campaigns, ransomware tactics, and fraud patterns.
Example: Instead of manually reviewing thousands of leaked credentials, an automated system can compare them to internal employee accounts and flag potential exposures.
4. Analysis: Producing Actionable Intelligence
This is where raw OSINT is transformed into intelligence. Analysts examine the data to:
- Identify emerging threats (e.g., a new ransomware gang targeting specific industries).
- Assess credibility (e.g., verifying if a dark web database leak is legitimate).
- Determine impact (e.g., assessing the risk of a phishing kit targeting a company’s domain).
Example: A security team monitoring a dark web forum might detect threat actors discussing exploits for a recently disclosed vulnerability, allowing them to preemptively patch affected systems.
5. Dissemination: Delivering Intelligence to Key Stakeholders
Intelligence is only useful if it reaches the right people in the right format. Different stakeholders require different intelligence products, including:
- Strategic Intelligence (for executives & CISOs): High-level reports on cybercrime trends, attack motivations, and geopolitical risks.
- Operational Intelligence (for SOCs & threat analysts): Indicators of compromise (IoCs), malware signatures, and active threats.
- Tactical Intelligence (for security engineers): TTPs of adversaries, detailed technical analysis, and defensive measures.
Example: After detecting an impending ransomware campaign, intelligence teams may send a threat bulletin to CISOs, detailed IoCs to SOC teams, and patching recommendations to IT administrators.
Dissemination doesn’t always require a complex report or a polished intelligence briefing—an intelligence product can be as simple as an email confirming or disproving a security concern, backed by reliable sources. In many cases, speed is more important than presentation; a short, well-referenced message to a security team can provide critical insights faster than a detailed report. Similarly, a single-slide deck summarising key OSINT findings or a quick Slack message with verified indicators of compromise (IoCs) can be just as valuable as a full intelligence dossier. The key is to ensure that the right information reaches the right people in a format that supports quick decision-making and response.
Defining OSINT in CTI
Open-Source Intelligence (OSINT) refers to the collection, analysis, and interpretation of publicly available information to identify risks, emerging threats, and potential cyberattacks. Within Cyber Threat Intelligence (CTI), OSINT serves as a critical tool, helping security teams detect indicators of compromise (IOCs), monitor threat actor activity, and mitigate cyber risks before they escalate.
Unlike classified intelligence or internal telemetry from security tools, OSINT draws from external sources that are freely accessible or require minimal authentication. This allows organisations to gain a broader view of their threat landscape, including potential data leaks, phishing campaigns, and adversarial planning occurring in criminal forums.
By leveraging OSINT, organisations can move from a reactive security approach—responding only after an incident occurs—to a proactive one, where threats are identified and mitigated before they cause harm. However, the real challenge lies in filtering out irrelevant data and transforming raw OSINT into meaningful intelligence that informs decision-making.
Key Sources of OSINT

OSINT can be gathered from a vast array of sources, but in cybersecurity, these are typically categorised into three main areas:
1. Surface Web
The Surface Web consists of publicly accessible online content that does not require special permissions or anonymity tools to access. Key sources include:
- Social Media – Threat actors often discuss hacking methods, share leaked credentials, or advertise illicit services on platforms like Twitter, Telegram, and Discord.
- Company Websites & Job Listings – Publicly available employee details, technology stacks, and even misconfigured web servers can expose an organisation to risk.
- News & Security Blogs – Reports on data breaches, ransomware attacks, and emerging vulnerabilities provide valuable intelligence on ongoing cyber threats.
- Paste Sites & Code Repositories – Platforms like Pastebin and GitHub can be used to share stolen data, leaked API keys, or exposed credentials.
2. Deep Web
The Deep Web refers to content that is not indexed by standard search engines but is still accessible with proper credentials. Important OSINT sources here include:
- Subscription-Based Threat Intelligence Feeds – Industry reports and commercial CTI feeds provide detailed insights into threat actors and attack trends.
- Restricted-Access Forums – Cybercriminals and hacking communities operate in invite-only forums where malware is traded, vulnerabilities are discussed, and attack methods are refined.
- Breach Notification Services – Platforms like Have I Been Pwned or commercial alternatives notify organisations of exposed credentials or sensitive data leaks.
3. Dark Web
The Dark Web consists of anonymised networks, primarily accessed via Tor, I2P, or other privacy-preserving technologies, where cybercriminals operate under pseudonyms. Key OSINT sources here include:
- Criminal Marketplaces – Sites where stolen credentials, malware, ransomware-as-a-service (RaaS), and hacking tools are bought and sold.
- Hacking Forums & Telegram Channels – Underground communities where cybercriminals share tactics, discuss vulnerabilities, and coordinate attacks.
- Stealer Logs & Leaked Databases – Credentials harvested from infostealers (such as RedLine or Raccoon) often appear in logs before being used for account takeovers.
The Importance of OSINT in Cybersecurity
OSINT is particularly valuable for:
Early Threat Detection – Identifying phishing domains, leaked credentials, or chatter about an organisation on cybercriminal forums before an attack takes place.
Attack Surface Management – Understanding what an attacker can see about your organisation, from exposed assets to employee data, allowing for proactive risk reduction.
Incident Response & Attribution – OSINT can help trace an attack’s origins, uncover associated threat actors, and provide indicators of compromise (IOCs) for defence strategies.
However, the sheer volume of OSINT data—combined with the difficulty of verifying its accuracy—poses a challenge for security teams.
How to Structure an OSINT Collection Plan
A well-structured OSINT collection plan is essential for transforming scattered pieces of information into actionable intelligence. Without a clear strategy, organisations risk gathering vast amounts of raw data without meaningful insights or direction. A systematic approach ensures that OSINT efforts align with an organisation’s security priorities and can be effectively used to mitigate threats.
An effective OSINT collection plan involves five key steps:
Step 1: Define Intelligence Requirements
Before collecting any OSINT, it’s crucial to determine what intelligence your organisation actually needs. This involves asking:
- What threats matter most to our business? – Are you concerned about credential leaks, phishing campaigns, ransomware threats, insider threats, or data exfiltration?
- What assets need protecting? – This could include sensitive customer data, employee credentials, proprietary technology, or intellectual property.
- Who are the likely threat actors? – Understanding whether you are at risk from nation-state actors, cybercriminal gangs, or hacktivist groups helps prioritise intelligence collection.
Once intelligence requirements are defined, they should be documented as part of an Intelligence Collection Plan (ICP), ensuring all OSINT activities are targeted and relevant.

Step 2: Identify Reliable OSINT Sources
Not all OSINT sources are equally valuable, and using unverified or low-quality sources can lead to false positives and wasted resources. Identifying trusted and relevant OSINT sources is crucial.
Key OSINT sources for cybersecurity include:
- Dark Web & Criminal Marketplaces – Where stolen credentials, payment data, and hacking tools are traded.
- Threat Actor Forums & Telegram Channels – Used for planning attacks, recruiting insiders, and sharing breach information.
- Phishing Intelligence Feeds – Monitoring domains impersonating your organisation can help detect phishing attacks before they spread.
- Leaked Databases & Stealer Logs – If employee or customer credentials are compromised, they may appear in breach dumps or logs from infostealer malware.
- Surface Web & Social Media – Cybercriminals often use social media to promote attacks or expose sensitive data inadvertently.
The Importance of Verification
Intelligence is only useful if it is accurate. Before acting on OSINT, it’s important to:
- Cross-check information across multiple sources to ensure reliability.
- Verify the credibility of the source—for example, distinguishing between a legitimate data breach and a false claim made by a threat actor.
- Use automation tools (such as SOS Intelligence) to filter out noise and prioritise high-risk intelligence.

Step 3: Collect and Process the Data
Once the right sources are identified, the next step is collecting and structuring the data for analysis. Effective OSINT collection should focus on:
- Automating Data Collection – Given the vast amount of OSINT available, manual collection is inefficient. Using tools like SOS Intelligence allows for continuous monitoring of the Dark Web, phishing domains, and threat intelligence feeds.
- Prioritising Data – Not all OSINT is immediately actionable. Prioritisation is essential based on factors like credibility, relevance, and urgency. For example, leaked employee credentials from a stealer log require immediate action, whereas general discussions about vulnerabilities may require further investigation.
- Structuring Findings – OSINT should be documented in a format that facilitates analysis, such as:
- Indicators of Compromise (IOCs) – IP addresses, domains, hashes, and file signatures linked to attacks.
- Threat Actor Profiles – Identifying who is behind the attack, their motives, and their previous activities.
- Risk Level & Impact Assessment – Determining the likelihood and potential damage of a threat.

Step 4: Validate and Cross-Reference Intelligence
Not all OSINT findings will be immediately actionable, and some may even be misleading. Before taking action, intelligence should be verified by:
- Comparing with known threat intelligence feeds – Are other security researchers reporting similar findings?
- Checking for corroborating evidence – A leaked credential may be fake or outdated; checking other sources can confirm if it’s a real compromise.
- Assessing the credibility of the source – Some threat actors exaggerate their claims to gain notoriety.

Step 5: Convert OSINT into Actionable Intelligence
The final step is ensuring that OSINT findings lead to tangible security improvements. This involves:
Reporting Intelligence to the Right Stakeholders
- Security Operations Centre (SOC): To monitor and respond to active threats.
- Chief Information Security Officer (CISO): For strategic threat awareness and risk assessment.
- Incident Response Teams: To take immediate action against identified threats.
Developing an Action Plan Based on OSINT Findings
- If a phishing domain is detected, block it and alert employees to prevent credential theft.
- If leaked credentials are found, reset affected passwords and enforce multi-factor authentication (MFA).
- If cybercriminals are discussing an upcoming attack, enhance monitoring and prepare defences before it happens.

Real-World Example: OSINT in Action – The Sony Pictures Hack (2014)

The 2014 cyberattack on Sony Pictures Entertainment remains one of the most high-profile examples of how Open-Source Intelligence (OSINT) can be leveraged in both cyber offence and defence. The breach, attributed to the North Korean-backed hacking group “Guardians of Peace” (GOP), led to the leak of highly sensitive data, including employee records, internal emails, and unreleased films.
How OSINT Played a Role in the Attack
The Sony Pictures hack was not an opportunistic attack; it was meticulously planned. The attackers used OSINT techniques to gather intelligence on Sony’s infrastructure, personnel, and security posture before launching their destructive campaign.
1. Employee Profiling & Social Engineering
- Hackers scanned social media sites such as LinkedIn, Twitter, and Facebook to gather information on Sony’s employees, particularly those in IT and security roles.
- Publicly available resumes, job postings, and tech conference presentations gave insights into the software, systems, and security solutions Sony was using.
- This information helped the attackers craft highly convincing phishing emails and pretext phone calls, tricking employees into revealing credentials or installing malware.
2. Mapping Sony’s Digital Infrastructure
- OSINT sources such as Shodan (a search engine for internet-connected devices) allowed the attackers to identify exposed servers, outdated software, and misconfigured systems.
- DNS records and WHOIS lookups provided information on Sony’s network architecture.
- Discussions on public technical forums and GitHub repositories revealed additional details about Sony’s internal systems.
3. Third-Party Exploitation
- Sony’s vendors and contractors also became intelligence targets.
- By identifying Sony’s external partners through press releases and LinkedIn, the attackers could exploit weak security measures in third-party networks to gain indirect access.
The Attack Execution
Armed with this OSINT, the attackers deployed a sophisticated wiper malware that:
- Destroyed over 3,000 computers and servers, wiping hard drives and making recovery difficult.
- Exfiltrated terabytes of data, including unreleased films, salary details, and executives’ private emails.
- Leaked damaging internal emails, causing reputational harm and leadership changes.
- Displayed a threatening message on employees’ screens, warning them not to work for Sony.
Impact & Aftermath
- Sony suffered an estimated $35 million in IT damage and over $100 million in indirect costs, including legal fees and security overhauls.
- The attack was politically motivated, reportedly in response to Sony’s release of the film The Interview, which depicted North Korea’s leader in a negative light.
- The FBI officially attributed the attack to North Korea, marking one of the first major cyber incidents linked to a nation-state actor.
- Sony had to completely rebuild its IT infrastructure and implement more robust security measures, including OSINT-driven threat intelligence monitoring.
Lessons for Cyber Threat Intelligence (CTI)
The Sony hack underscores the critical importance of OSINT in cybersecurity—both as a weapon for attackers and a defensive tool for organisations. Key takeaways include:
- Proactive OSINT Monitoring: Organisations must regularly monitor their exposed attack surface—social media, public records, and open databases—for sensitive information that could aid attackers.
- Employee Cyber Hygiene: Training staff to recognise phishing attempts, social engineering tactics, and OSINT-driven reconnaissance is essential.
- Third-Party Risk Management: Companies should enforce strict security standards on vendors and partners, ensuring that weak links in the supply chain do not become entry points.
- Network Hardening: Regular audits of publicly exposed assets, DNS records, and internet-facing infrastructure can help detect and patch vulnerabilities before they are exploited.
Conclusion & Key Takeaways
The Sony Pictures hack serves as a stark reminder that OSINT is a double-edged sword—while cybercriminals and nation-state actors use it to plan sophisticated attacks, organisations can harness the same intelligence to defend themselves proactively.
To operationalise OSINT effectively, businesses must move beyond passive collection and integrate OSINT into their threat detection, risk management, and incident response strategies. The key to success lies in structuring intelligence workflows to ensure that OSINT is verified, actionable, and timely.
Key Takeaways
- OSINT is only valuable when it leads to action. Raw data without context or validation is just noise. Organisations must refine and interpret OSINT to extract meaningful insights.
- A structured OSINT collection plan is essential. By defining intelligence requirements, identifying reliable sources, and validating findings, organisations can ensure that their OSINT efforts are aligned with real security needs.
- Automation enhances OSINT effectiveness. Given the sheer volume of open-source data, automated tools—such as SOS Intelligence—can help streamline collection, filtering, and analysis, ensuring that security teams focus on the most relevant threats.
- Threat actors are already using OSINT against businesses. The Sony hack, among many other incidents, demonstrates how attackers leverage public information to conduct reconnaissance. Organisations must proactively monitor their attack surface to reduce exposure.
- OSINT should be integrated into cybersecurity operations. Security teams, CISOs, and SOCs must incorporate OSINT insights into threat intelligence feeds, SIEM systems, and response workflows to improve incident detection and mitigation.
Final Thoughts
In today’s evolving threat landscape, cyber resilience requires intelligence-led security strategies. Open-Source Intelligence is no longer optional—it is a critical component of modern cybersecurity and threat intelligence. By leveraging automated solutions like SOS Intelligence, organisations can transform OSINT from an underutilised resource into a powerful tool for threat detection and risk mitigation.
The key question isn’t whether OSINT can help your organisation—it’s whether you are using it effectively.
Automating OSINT Collection with SOS Intelligence
Manually tracking and analysing OSINT sources is time-consuming, especially when dealing with fast-moving threats on the Dark Web. Automation is essential for transforming OSINT from passive intelligence into an actionable security asset.
SOS Intelligence provides the tools to help automate your OSINT collection. Our platform continuously monitors Dark Web marketplaces, leaked credential databases, and phishing intelligence sources and makes that data readily available for analysis. By using real-time threat intelligence feeds, organisations can:
- Detect leaked credentials before they are weaponised.
- Identify phishing sites impersonating their brand.
- Identify intelligence regarding threats targeting their industry.
- Streamline OSINT analysis by filtering noise and focusing on relevant intelligence.
With the right approach, OSINT can become an integral part of an organisation’s cyber defence strategy—helping security teams stay ahead of attackers rather than merely reacting to threats.
Photo by Christopher Burns on Unsplash
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