Personal Data Leak Monitor

CodeStepByStep data breach

103K accounts from CodeStepByStep (codestepbystep.com) were exposed in this breach. Besides email addresses, it included names and usernames.

Breach date
November 15, 2025
Accounts
103,077
Added to the database
November 23, 2025

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What leaked

Email addressesNamesUsernames

What to do now

  1. Do not tap links in emails claiming to be that service
  2. Expect scam emails that use your real name
  3. Verify you have not reused that login anywhere

Tools that help with this breach

1PasswordPaidVisit the official site →(opens in a new tab)YubiKeyPaidVisit the official site →(opens in a new tab)

About this breach

In November 2025, the online coding practice tool CodeStepByStep suffered a data breach that exposed 17k records which were subsequently published online. The following month, a further corpus of data was released bringing the total to 103k. The impacted data included names, usernames and email addresses.

Source: Have I Been Pwned (CC BY 4.0)

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