Daily Cyber Brief
REvil-hit Medibank to pull plug on IT in order to fix its defensive posture, Iran's MOIS using hacked emails to send MSP remote access tool, and APT37 (DPRK) uses internet explorer zero-day...

Cybersecurity
Australian health insurance company Medibank will take all of its IT systems offline and close its branches over the weekend as part of its ongoing efforts to improve security and recover from a massive data security breach in October. The planned outage, dubbed…
MuddyWater hackers, a group associated with Iran’s Ministry of Intelligence and Security (MOIS), used compromised corporate email accounts to deliver phishing messages to their targets. The group adopted the new tactic in a campaign that might have started in…
North Korean threat group APT37 was able to exploit an Internet Explorer zero-day vulnerability to deploy documents loaded with malware as part of its ongoing campaign targeting users in South Korea, including defectors, journalists, and human rights groups…
South Korean authorities issued an interagency advisory Thursday warning companies about hiring North Korean IT workers who disguise their true nationality and use their wages to help fund the country’s sanctioned nuclear weapons program. The advisory was published by…
Cybercrime marketplaces are increasingly selling stolen corporate email addresses for as low as $2 to fill a growing demand by hackers who use them for business email compromise and phishing attacks or initial access to networks. Analysts at Israeli cyber-intelligence firm…
Cisco has disclosed today a high-severity vulnerability affecting the latest generation of its IP phones and exposing them to remote code execution and denial of service (DoS) attacks. The company warned on Thursday that its Product Security Incident Response Team (PSIRT) is…
The U.S. Department of Health and Human Services (HHS) issued a new warning today for the country's healthcare organizations regarding ongoing attacks from a relatively new operation, the Royal ransomware gang. The Health Sector Cybersecurity Coordination…
Google says the latest release of Chrome for desktop devices now comes with a new performance-boosting feature designed to free up memory and make web browsing smoother. The new feature, dubbed Memory Saver, will release up to 30% of all memory by suspending…
The Tor Project team has announced the release of Tor Browser 12.0, a major version release introducing support for Apple Silicon chips and several enhancements for the Android version. Tor is a Firefox-based browser created for accessing special .onion domains only accessible…
Indiana's attorney general filed two separate lawsuits against social media firm TikTok Wednesday alleging the platform promoted content to young users that isn't age-appropriate and did not adequately protect the safety of users' data. According to court documents, the…