By Rob Lenihan GM says it found ‘malicious login activity’ on an unspecified number of online user accounts. Credential stuffing is a low level cyberattack that can cause some major headaches. In this type of attack, hackers obtain stolen credentials and use them to gain unauthorized access to user accounts through large-scale automated login requests. Gone PhishingA report by the cybersecurity company Akamai found that credential stuffing attacks jumped 49% in 2020. There were 193 billion credential stuffing attacks reported globally, the report said, and out of these, 3.4 billion hit the fin…