Rental car company Hertz says it suffered a data breach, attributed to software maker Cleo, that included customers personal information and driver’s licenses. Hertz has put up a page on this which you can see here:
hertz.com/content/dam/hertz/global/resources/Notice_of_Data_Incident-United_States.pdf
Ensar Seker, CISO at SOCRadar had this comment:
“The data breach impacting Hertz and its associated brands is a textbook example of how third-party vulnerabilities can cascade into massive data exposure, even for well-established enterprises. What makes this breach especially concerning is the type of data compromised, not just names and contact details, but driver’s licenses, payment card information, Social Security numbers, and even workers’ compensation claims. This is prime identity theft material, and unfortunately, once it’s leaked, there’s no putting the genie back in the bottle.
“The breach relates to a known vulnerability exploited by the Clop ransomware group in Cleo’s enterprise file transfer solution. Last year, Cleo was already on the radar for widespread exploitation by Russian-linked actors, yet many organizations were slow to identify and isolate exposure paths. This reinforces a painful truth: companies are only as secure as their most vulnerable vendor.
“Hertz may not have been directly compromised, but its vendor relationships introduced risk vectors that weren’t fully mitigated. This is a growing pattern across the ransomware landscape, where attackers target software supply chains to scale their reach and impact.
“For consumers, the aftermath is frustratingly familiar. A driver’s license or Social Security number cannot be ‘reset’ like a password. These data points are permanent identifiers, and once they are exposed, victims become vulnerable to synthetic identity fraud, targeted phishing, and even fraudulent claims or loans.
“This breach highlights the necessity for increased proactive vendor due diligence, enhanced threat intelligence sharing, and stronger regulatory pressure on third-party software providers to comply with contemporary security standards. The risks impact millions of individuals and the public’s trust in digital infrastructure.”
Javvad Malik, lead security awareness advocate at KnowBe4 follows with this:
Zero-day vulnerabilities are rare, but when they occur have a large impact. Even if Hertz had all their systems patched and up to date, it would have been difficult to protect against the Cleo zero day attack. Offering identity monitoring is all well and good, but it is very much a case of bolting the barn door once the horse has bolted. The real challenge lies in staying ahead of these evolving threats. Organizations need to shift their mindset from reactive to proactive. Defense in depth needs to be adequately configured so that even if one system is compromised through a zero day, the whole infrastructure doesn’t fall like a house of cards. Part of this is building a strong security culture, where security is embedded throughout the organization and not just limited to the security team.
This is something that I will watch closely as my wife and I used Hertz when we were in France in 2023. Thus there is always the possibility that we’re impacted. Regardless, this is another example of you’re only as secure as the people your company works with. On top of that, why did it take so long for Hertz to report this? That’s a question that I would like answered sooner rather than later.








How Social Media Platforms Really Enforce Community Guideline
Posted in Commentary with tags Safety Detectives on April 15, 2025 by itnerdThe research team at SafetyDetectives just wrapped up a really interesting study, where they compare the censorship and content moderation policies of major platforms and investigate whether they are actually effective or just security theater.
Key findings at a glance:
Considering their findings, they believe that individuals and organizations must practice careful scrutiny when consuming media or information on these platforms, given the seemingly one-sided implementation of policies on different social media sites.
You can access their report here: https://www.safetydetectives.com/blog/community-guidelines-comparison-research/
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