Security expert Sean Sullivan isn't surprised that the massive 2014 breach of Yahoo, which exposed at least 500 million account details, only recently came to light. Here's why, as well as what users must learn from this breach.
Don't leap to conclusions on the basis of a new report that suggests Yahoo is preparing to warn the world that it was hacked and lost hundreds of millions of users' account credentials. Someone may simply have harvested passwords reused on other sites.
Cisco has patched another zero-day flaw stemming from the Shadow Brokers' leak of Equation Group tools and attack code. The technology giant warns that attackers have been exploiting the vulnerability.
Apple-FBI crypto debate update: A researcher successfully defeated an iPhone passcode using less than $100 in equipment. But the delicate procedure, if used on the San Bernardino shooter's iPhone, could have accidentally obliterated its data.
Ransomware attacks are surging because attackers have perfected their techniques while enterprises in all sectors have failed to address critical security shortcomings, says Raimund Genes, CTO at Trend Micro.
Because many law enforcement agencies lack cybercrime expertise, it's important for companies that have been attacked to provide as much technical and forensic information as possible to authorities to help ensure that investigations lead to arrests and prosecutions, a panel of experts says.
A developer warns that Dropbox gains wide-ranging access to Apple's OS X operating system using a SQL trick that some equate to hacking users' systems. Here's why giving a desktop app unusual access to Apple's privacy settings poses a security risk.
Have you been the target or victim of ransomware-wielding attackers? The FBI wants individuals and businesses to report ransomware attacks to help it better pursue, disrupt and potentially arrest suspects.
All in the family: A "sophisticated attacker" alert from US-CERT, urging enterprises to lock down their networking gear, was triggered by the leak of exploit tools - targeting, in part, U.S.-built networking gear - that may have been tied to the NSA.
Microsoft has released a slew of security fixes to patch critical vulnerabilities, including in its IE and Edge browsers. One zero-day flaw, fixed via a Microsoft Office patch, has been exploited in the wild for more than two years.
The cybercrime sector involves a rapidly growing services economy that provides everything from bulletproof hosting and stresser/booter DDoS on demand, to ransomware-as-a-service and sites that offer to launder bitcoins via a process known as tumbling.
The massive Sony breach spelled out the risks facing any business that deals in digital content. Here's how David Hahn, CISO of publishing giant Hearst, keeps the cybersecurity conversation going with his board of directors.
SentinelOne, one of a batch of vendors using machine learning to conquer malware, says it will not integrate its behavioral detection engine into Google's VirusTotal service. CEO Tomer Weingarten claims the investment wouldn't provide a worthwhile return.