One Plaintext Login Sits in the Proxy1 Combolist: Check Your Email

The most dangerous combination in a combolist is an email address next to a readable password, and the Proxy1 combolist has that combination once. HEROIC analysts logged 1 pair, dated February 1, 2026, with the URL it was used on. The only way to know whether it is yours is to scan your email.

What an Attacker Can Do With This One Pair

The pair can be used the moment it is read. The attacker types the email and the password into the page named by the URL. If that fails, the same pair goes onto other sites, since reused passwords are the whole reason these files are put together. Nothing about the pair needs to be decoded, translated or repaired first.

Recorded in the Proxy1 Entry

• Email addresses, which are both the login name and the destination for resets.
• Plaintext passwords, written as the owner typed them.
• URLs, the page tied to the pair.

Why Reuse Carries the Risk Forward

A password on its own is only as risky as the number of places it protects. If it guards a mailbox, every reset message passes through that mailbox, which gives its holder a way into banking, shopping and social sites. A different password on each site keeps one mistake from reaching the rest.

How This Kind of File Is Made

A combolist is built by gathering email and password pairs from various places and storing them together so they can be tried on other sites. Proxy1 is the label this file carries. It is not a description of the contents and says nothing about any service or the people in it.

Is It Your Login?

To check, scan your email and see your information. If it matches, change the password wherever you used it and give each site a different one. A match is worth acting on at once, since nothing about a plain text password gets harder to use as days pass. Your work address and your personal address both belong in the scan.