Reports are flooding Hacker News about a fresh wave of Zendesk-related email spam. Users are receiving hundreds of unwanted messages, primarily signup attempts. The issue appears to be related to vulnerabilities in Zendesk's system, which spammers are exploiting. Many users are concerned about the impact on email deliverability and potential security risks.

The spam campaign seems to target email addresses found in public repositories, such as GitHub. Spammers are leveraging Zendesk's ticketing system to send malicious content. This is not the first time Zendesk has been targeted. Previous incidents have led to temporary fixes, but the spammers keep adapting their tactics, causing ongoing disruptions.

Several users are suggesting workarounds like using Sieve scripts to filter the spam. Email providers like Fastmail and Proton Mail support these scripts. Zendesk's reputation for email handling is being questioned, with some users criticizing its approach to deliverability. The situation underscores the ongoing challenges of combating email-based attacks.

The next step is for Zendesk to address the root cause and implement more robust security measures. Users should remain vigilant and continue to report suspicious emails. It's likely that the spammers will continue to adapt their methods, so proactive measures from Zendesk and its users are essential to mitigate the impact of future attacks.