CISA alerted administrators that activity from the LokiBot information stealing trojan has been increasingly sharply since July.
A piece of malware made its way into the macOS app store after being accidentally notarized by Apple, allowing it to run on victims' Macs.
The EmoCrash exploit took advantage of a flaw in the Emotet trojan's code to help defenders stop the malware for more than six months.
The US government has published a detailed analysis of the Taidoor trojan it says is used by the Chinese government in network compromises.
Malware and phishing campaigns preying on interest in the COVID-19 crisis have spiked but are now falling off in many places.