Addcn says attackers bypassed 591's login checks; the firm has patched the flaw and rotated keys

According to iThome, on the evening of August 20, Addcn Technology (5287) issued a cybersecurity material announcement on the Market Observation Post System (MOPS) disclosing an abnormal website access incident ^[1]. The company detected abnormal login activity on its 591 website and confirmed through investigation that external attackers exploited a weakness in the login mechanism to bypass normal authentication procedures and gain unauthorized access ^[1]. Addcn Technology activated its emergency cybersecurity response mechanism, completing vulnerability patching, blocking abnormal access paths, rotating cryptographic keys, and conducting a site-wide source code security review ^[1].

Industries mainly affected: Manufacturing

Addcn Technology activated its emergency cybersecurity response mechanism, completing vulnerability patching, blocking abnormal access paths, rotating cryptographic keys, and conducting a site-wide source code security review ^[1]