Apple fixed the macOS vulnerability in a December security update.
A watering-hole attack leveraged a now-patched Apple vulnerability to infect website visitors with novel Mac malware.
A recent variant of the XCSSET malware has the capability to infect ARM M1-based Macs in addition to x86-based machines.
The Silver Sparrow malware is targeting Macs, including those with the M1 chip, but is not delivering a payload.
The Apple Mail app on the most recent Macs appear to be storing copies of encrypted emails in plaintext, an Apple IT specialist found. There is a way to turn this off, temporarily.