Resource Hub

Domain Reputation Update Oct 2024 - Mar 2025

Query the legacy DNSBLs via Microsoft? Move to Spamhaus Technology’s free Data Query Service

If you're using the free legacy DNS Blocklists (DNSBLs) through the Public Mirrors while running on Microsoft’s infrastructure, you'll need to make a few small adjustments to your email setup. These changes are simple to apply, but if you don’t take action, you risk having some - or even all - of your email blocked after April 9, 2025!

How I’m fighting cybercrime with Spamhaus (and how you can too!)

Meet Jeroen Gui - student, founder of JustGuard, and a top contributor to Spamhaus' Threat Intel Community Portal. Passionate about making the internet a safer place, Jeroen submits thousands of malicious domains, URLs, and raw email sources every month. But what drives him to share his data, and how can you get involved too?

Networks hosting botnet C&Cs: Same players, same problems

With every Botnet Threat Update we publish, the same networks consistently appear in the Top 20 for hosting botnet command and control (C&C) servers. But why does this keep happening? In this Botnet Spotlight, we look into the root causes behind this persistent issue and what networks must do to break the cycle.

Botnet Threat Update July to December 2024

If you query the legacy DNSBLs via Hetzner move to Spamhaus Technology’s free Data Query Service

Currently accessing the free legacy DNS Blocklists (DNSBLs) via the Public Mirrors, and using Hetzner's network? You'll need to make some minor changes to your email infrastructure. The changes are simple to implement, but if you fail to do so, you could find that at some point post-February 19th 2025, all or none of your email is blocked!

Truffe via PEC - Far perdere tempo e denaro alle aziende italiane

In questo articolo condividiamo un caso dove dei criminali hanno utilizzato delle credenziali rubate ad un ignaro imprenditore per spedire centinaia di PEC malevoli ad altrettanto ignari altri utilizzatori di PEC, causando un notevole dispendio di tempo e denaro, ed analizziamo i rischi della proposta portata avanti dalla UE per una PEC europea.

PEC “invoice scam” - Stealing time, money, and trust from businesses

PEC stands for “Posta Elettronica Certificata” - a type of legally binding “certified email” used in Italy. It's also a hub of abuse targeting business owners. In this article, we share a real-life case of criminals stealing PEC credentials to send malicious emails, causing significant loss of time and money, and explore the risks of a proposed European PEC system.

Avoiding Blocklistings: Part 3 - Take Matters into Your Own Hands to Protect Your Senders

Welcome back to the final instalment of our three-part series, where Lauren Meyer, CMO at SocketLabs, shares her top strategies for avoiding block listings. In Part 3, Lauren explores the proactive steps YOU can take to help senders avoid blocklistings.

Avoiding Blocklistings: Part 2 - Monitor and Educate Your Customers

Welcome back to Part 2 of our three-part series, where Lauren Meyer, CMO at SocketLabs, shares her top strategies for avoiding block listings. In Part 2, Lauren dives into how you can proactively monitor activity and educate your customers to become top senders!

Avoiding Blocklistings: Part 1 - Set Yourself AND Your Senders Up for Success

Building on the success of our popular LinkedIn Live with Melinda Plemel and Lauren Meyer, CMO at SocketLabs, Lauren has generously shared her top strategies for avoiding block listings in this three-part blog series.

Domain Reputation Update Apr 2024 - Sept 2024

The secret to secure DNS? It’s all in the policies

Following our recent investigations into the dangers of subdomain hijacking, we caught up with Prudence Malinki, Head of Industry Relations at Markmonitor, for some wise words of advice on the role policy can play in ensuring your DNS is secure.

10 DNS best practices to keep your Domain Reputation in check

Poor DNS hygiene can leave your organization vulnerable to threats like subDoMailing, DNS spoofing, domain hijacking and other threats. In addition to putting domain security at risk, these vulnerabilities can have long-term effects on domain reputation. Here are ten DNS best practices businesses can implement to protect their domains and entire business.

Spamhaus Deliverability Live (Ep9) - Five essential steps for every ESP to avoid blocklists

It's time for the Spamhaus Deliverability Live ep9: "Blockbusters: Five essential steps for every ESP to avoid blocklists." Lauren and Mel share all in this 15-minute deliverability fix, packed with expert insights to keep your customers on track and stay out of blocklists!