Breach Database / CodeStepByStep
Yes — CodeStepByStep was breached.
- 103,077 accounts affected
- Breach occurred 2025-11-15 · codestepbystep.com
- Verified entry in the Have I Been Pwned catalog
What happened
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.
What data was exposed
- Email addresses
- Names
- Usernames
What to do right now
- Expect convincing phishing emails. Attackers use breached details to write personalized emails. Be suspicious of any message referencing this service.
- Check your other accounts on Have I Been Pwned. Your email address may appear in other breaches you don't know about yet.
- Monitor the apps you use going forward. Clearly watches the breach record for the companies behind your apps and alerts you the moment one appears.
Breach data from Have I Been Pwned. Listing here means the service appears in the public breach record — not that your personal data was affected.