PESM Indonesia Breach: 13,096 Records

We noticed a concerning data exposure originating from PESM (Program Ekstensi), an Indonesian educational platform that has since ceased operations. Discovered on August 26, 2018, the breach appears to have been made public on a prominent hacking forum, making it accessible to a wider threat actor community. What struck us was the inclusion of plaintext passwords alongside email addresses, a significant vulnerability that dramatically increases the risk of account compromise and further downstream attacks.

The breach of PESM, identified as a database compromise, resulted in the exposure of 13,096 unique records. The leaked data primarily consists of user credentials, specifically email addresses and their corresponding plaintext passwords. This type of sensitive information is a prime target for credential stuffing attacks, where threat actors attempt to reuse compromised credentials across multiple online services. The fact that the passwords were not hashed or encrypted in any discernible way is a critical security failure that amplifies the potential impact of this incident. The source structure of the leak suggests a direct database dump, and its subsequent appearance on a public hacking forum indicates broad dissemination.

While specific news coverage for this particular PESM breach is limited, the incident aligns with a broader trend of educational platforms being targeted for their user data. Such breaches, especially those involving plaintext credentials, frequently contribute to the creation of combolists – aggregated lists of usernames and passwords used by attackers to test against various services. The exposure of over 13,000 credentials, even from a defunct platform, remains a valuable asset for malicious actors seeking to exploit password reuse across the internet.