CodeStepByStep data breach
103,077 accounts exposed.
Check whether your email is included on Have I Been Pwned.
What was exposed
Email addressesNamesUsernames
What to do
- Expect more phishing emails that mention this service. Do not click links in them; go to the site directly.
- Turn on two-step verification wherever it is offered, and use a password manager.
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.