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Let’s Encrypt rolls out 6-day and IP-based certificates

Let’s Encrypt says its short-lived TLS certificates with a 6-day lifetime are now generally available. Each certificate is valid for 160 hours from the time it is issued. To request one, operators must select the “shortlived” profile in their ACME client. The option is opt-in and works with clients that support the certificate profile feature. Let’s Encrypt said this type of certificate requires more frequent validation and reduces reliance on traditional revocation systems by shortening … More → The post Let’s Encrypt rolls out 6-day and IP-based certificates appeared first on Help Net Security.
http://news.poseidon-us.com/TQS6JL

Confusion and fear send people to Reddit for cybersecurity advice

A strange charge appears on a bank account. An email claims a package is on the way. A social media account stops accepting a password that worked yesterday. When these moments hit, many people do the same thing. They open Reddit and ask strangers for help. A new study shows how often this happens and what people ask when they do. Researchers affiliated with Google and University College London built an analysis pipeline that sifted … More → The post Confusion and fear send people to Reddit for cybersecurity advice appeared first on Help Net Security.
http://news.poseidon-us.com/TQRyg1

Product showcase: PrivacyHawk for iOS helps users track and remove personal data from data brokers

Every interaction online, from signing up for a newsletter to making a purchase, leaves a trace. These traces are collected by data brokers and resold to advertisers, analytics firms, or, in some cases, criminals on the dark web. As personal information is shared more widely, the risk of phishing, spam, scams, and identity theft increases. PrivacyHawk focuses on reducing this digital footprint by identifying where personal data is exposed and helping remove it before it … More → The post Product showcase: PrivacyHawk for iOS helps users track and remove personal data from data brokers appeared first on Help Net Security.
http://news.poseidon-us.com/TQRw8m

Privacy teams feel the strain as AI, breaches, and budgets collide

Privacy programs are under strain as organizations manage breach risk, new technology, and limited resources. A global study from ISACA shows that AI is gaining ground in privacy work, with use shaped by governance, funding, and how consistently privacy is built into systems. Board view of privacy programs (Source: ISACA) AI use follows maturity, not urgency Only a small number of organizations currently use AI for privacy tasks such as data discovery, risk assessment, and … More → The post Privacy teams feel the strain as AI, breaches, and budgets collide appeared first on Help Net Security.
http://news.poseidon-us.com/TQRw8f

Cybersecurity jobs available right now: January 20, 2026

Application Security Engineer xAI | USA | On-site – View job details As an Application Security Engineer, you will review and analyze code to identify vulnerabilities, define secure coding standards, and embed security practices into the CI/CD pipeline. You will perform threat modeling and risk assessments, manage application vulnerabilities through remediation, and support incident response for application security issues. CISO Orca Security | Israel | Hybrid – View job details As CISO, you will own … More → The post Cybersecurity jobs available right now: January 20, 2026 appeared first on Help Net Security.
http://news.poseidon-us.com/TQRw6q

Fake browser crash alerts turn Chrome extension into enterprise backdoor

Browser extensions are a high-risk attack vector for enterprises, allowing threat actors to bypass traditional security controls and gain a foothold on corporate endpoints. Case in point: A recently identified malicious extension called NexShield proves that a single user install from an official and nominally safe online marketplace can escalate into full remote access. Huntress researchers found that it downloads a previously undocumented Windows remote access trojan (RAT) onto domain-joined machines, which are “typically corporate … More → The post Fake browser crash alerts turn Chrome extension into enterprise backdoor appeared first on Help Net Security.
http://news.poseidon-us.com/TQRGbT

Inside the mysterious collapse of dark matter halos

Physicists have unveiled a new way to simulate a mysterious form of dark matter that can collide with itself but not with normal matter. This self-interacting dark matter may trigger a dramatic collapse inside dark matter halos, heating and densifying their cores in surprising ways. Until now, this crucial middle ground of behavior was nearly impossible to model accurately. The new code makes these simulations faster, more precise, and accessible enough to run on a laptop.
http://news.poseidon-us.com/TQRBWW