A malicious spreadsheet can make LibreOffice and Apache OpenOffice run an attacker's code as soon as the file is opened, security researchers have shown. There is no warning first, of the kind either program shows before it runs a macro. The attack works only when the program's Java support is enabled.
A purported ad-blocker exfiltrates reams of sensitive information and benefits from having Google's stamp of approval despite researcher warnings.
Microsoft has resolved a known issue that causes incorrect alerts warning that Defender Antivirus was turned off after installing recent updates. [...]
Microsoft asked customers this week to ignore alerts that Defender Antivirus has been turned off after installing the latest Defender updates. [...]