Enlarge (credit: Getty Images) Ransomware hackers have started exploiting one or more recently fixed vulnerabilities that pose a grave threat to enterprise networks around the world, researchers said. One of the vulnerabilities has a severity rating of 10 out of a possible 10 and another 9.9. They reside …

The U.S. government agency in charge of improving the nation’s cybersecurity posture is ordering all federal agencies to take new measures to restrict access to Internet-exposed networking equipment. The directive comes amid a surge in attacks targeting previously unknown vulnerabilities in widely used security and networking appliances …