When a security provider slips into financial difficulties, it can be a worrying time for their customers. How long will their data and services be accessible, and how current and effective will they be? For those customers, we are here for you to help you maintain security.

Recently, Cyren announced it was facing liquidation. No doubt many of its one billion users, or approximately 70,000 customers, are hastily considering their options – quickly assessing costs, comparing services, and evaluating new providers. Worry times.

So, to take the immediate pressure off affected companies and provide the gift of time to make informed decisions, our data for the services listed below will be offered for free for 3 months. No strings attached.

So what services do Spamhaus offer?

We provide IP and domain reputation data that can be used in various ways; our services most akin to Cyren’s offering are Data Query Service (comparable to Cyren’s Email Security) and the Spamhaus Intelligence API (like Cyren’s Threat Intelligence Feeds).

Here’s a quick rundown of these two services:

Data Query Service (DQS) – for email protection

This service provides real time blocklists to protect email streams against email-borne threats. Covering both content and IP data, DQS seamlessly integrates into existing infrastructure within minutes (literally!) for immediate protection.

  • Block +99% of malicious traffic
  • With 0.02% false positive rates
  • Supported by infrastructure that has never failed

After being live for one year, Alcides Zanarotti Junior, Universo Online (UOL)’s Director of Technology, shared: “DQS is so fast – it’s amazing. We are instantly protected, and our users are so pleased with the service we’re providing.” As you’re reviewing your setup, we’d also recommend reading this – not all blocklists are equal.

You can sign up to access DQS here – please mention you’re a Cyren customer in the ‘Questions and comments’ field.

Spamhaus Intelligence API (SIA) – for threat intelligence

This IP data, accessible via API, provides context-rich, actionable reputation insight, typically used by security teams to identify threats and prioritize remediation.

  • Access over 20 different metadata fields which relate to millions of malicious and compromised IP addresses
  • Query a single IP or networks up to /24, removing the need for large file downloads
  • Historical and live data is available

Red Sift’s Founding Engineer and CTO, Deepak Prabhakara, shared, “Spamhaus data allows us to add huge amounts of value for our customers and beyond.” He added, “We don’t have to worry about scale. The data is easy to access and a great benefit for us. We can push as much traffic as we need towards Spamhaus, and we know it’s going to work.”

You can sign up to access SIA here – please mention you’re a Cyren customer in the ‘Questions and comments’ field.

Would you prefer to chat?

As mentioned on LinkedIn, for those companies who have relied on Cyren’s services, or more accurately, the poor employees who now have to figure a way out of this mess, I have massive empathy for and want to make sure we support however we can. I can understand a feeling of panic setting in.

So if you’d rather just talk your options through, we’re here for you. Simply fill out our contact form, let us know you’re with Cyren, and we’ll quickly get your preferred method of communication set up.

You’re in safe hands with Spamhaus

We’ve been working on reputation data for over two decades. In fact, we’ve been around for as long as Google. We’ve got an incredibly experienced team of researchers across the globe, providing real time updates, 24/7.  This experience, quality, and accuracy of data, alongside our robust infrastructure, is what sets us apart.

Spamhaus’ datasets are used by leading global technology companies, internet service providers, and hosting companies, among others; we service billions of queries every day, are significantly over-provisioned, constantly monitor response times, and can rapidly ramp up infrastructure.

We hope this offer helps, whether you choose to take it up or not –

Simon, CEO, Spamhaus.

Related Products

Data Query Service (DQS)

Spamhaus’ Data Query Service (DQS) is an affordable and effective solution to protect your email infrastructure and users.

Using your existing email protection solution, you will be able to block spam and other related threats including malware, ransomware, and phishing emails.

The service has never failed and utilizes the longest established DNSBLs in the industry.

  • Proactive & preventative
  • Save on email infrastructure & management costs
  • Actionable

Spamhaus Intelligence API (SIA)

Spamhaus Intelligence API (SIA) contains context-rich metadata relating to IP and domain reputation. Integrate this data with your applications to enhance existing data feeds, or consume as an independent data source.

In this easy-to-consume format, SIA can be used for threat detection and investigation, risk scoring, customer vetting, validation and much more.

  • Save valuable time investigating and reporting
  • Simple and quick to access
  • Data you can trust in


Email blocklists – buy cheap, buy twice!

29 October 2019


As IT budgets and resources are squeezed it's understandable to shop around, be it for hardware, software, or threat intelligence data, for that matter. But beware...not all email blocklists (DNSBLs) are equal.