Cyber: Ctem In Practice: Prioritization, Validation, And Outcomes That Matter

Cybersecurity teams increasingly want to move beyond looking at threats and vulnerabilities in isolation. It's not only about what could go wrong (vulnerabilities) or who might attack (threats), but where they intersect in your actual environment to create real, exploitable exposure.

Which exposures truly matter? Can attackers exploit them? Are our defenses effective?

Continuous Threat Exposure Management (CTEM) can provide a useful approach to the cybersecurity teams in their journey towards unified threat/vulnerability or exposure management.

CTEM, as defined by Gartner, emphasizes a 'continuous' cycle of identifying, prioritizing, and remediating exploitable exposures across your attack surface, which improves your overall security posture as an outcome. It's not a one-off scan and a result delivered via a tool; it's an operational model built on five steps:

CTEM shifts the focus to risk-based exposure management, integrating lots of sub-processes and tools like vulnerability assessment, vulnerability management, attack surface management, testing, and simulation. CTEM unifies exposure assessment and exposure validation, with the ultimate objective for security teams to be able to record and report potential impact to cyber risk reduction. Technology or tools have never been an issue; in fact, we have a problem of plenty in the cybersecurity space. At the same time, with more tools, we have created more siloes, and this is exactly what CTEM sets out to challenge - can we unify our view into threats/vulnerabilities/attack surfaces and take action against truly exploitable exposure to reduce overall cyber risk?

Thousands of vulnerabilities are reported every year (the number was more than 40,000 in 2024), but less than 10% are actually ever exploited. Threat Intelligence can significantly help you zero in on the ones that matter for your organization by connecting vulnerabilities to adversary tactics, techniques, and procedures (TTPs) observed in active campaigns. Threat intelligence is no longer a good-to-have but is a need-to-have. It can help you specify Priority Intelligence Requirements (PIRs): the context, the threat landscape that matters most in your environment. This prioritized threat intelligence tells you which flaws are being weaponized, against which targets, and under what conditions, so you can focus remediation on what's exploitable in your environment, not what's theoretically possible.

The question you should ask your threat intel

Source: The Hacker News