Malware

An unclassified e-mail system used by the U.S. Joint Chiefs of Staff, their chairman and his support staff was infiltrated by Russian hackers in August 2015, according to CBS News, citing former Joint Chiefs Chairman Martin Dempsey.

Cisco Talos researchers spotted Hailstorm spam tactics used to evade cyber defenses and spread malware via phishing attacks.

As ransomware infections grow three-fold, a project that aims to help more people now offers decryption tools in multiple languages and for multiple types of ransomware.

A U.S. district court on Friday unsealed a federal indictment that charges three Romanian nationals with 21 counts of conspiracy, fraud and identity theft for their alleged roles in a cybercriminal operation known as Bayrob.

According to a research report, hackers are using Punycode, a technique for encoding domain names with Unicode characters, to bypass anti-phishing protections in Office 365 productivity software.

After a second Yahoo breach served up data on one billion users, questions have arisen about the company's security posture.

Microsoft security researchers are warning consumers about a string of fraudulent emails, purportedly from MasterCard, telling card owners they need to click on an attachment to avoid an unwanted charge.

Howard County (Indiana) government officials reported that more files than originally thought were impacted by a pair of ransomware attacks that took place in November.