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antispam Good-bye, Blocklist Removal Center. Hello, IP and Domain Reputation Checker.

We’ve been making changes to the Blocklist Removal Center (BRC). When it was first released over a decade ago, it did its job; however, in 2021, we wanted to build a tool fit for today's audience that can be developed to deliver further insights. Here’s the first iteration on that journey – The IP and Domain Reputation Checker, https://check.spamhaus.org. [...] [more]
spamhaus.org    Tool, Deliverability

antispam Update for Composite Blocklist (CBL) Users

As of the first week of 2021, the Composite Blocklist (CBL) is being retired. This data, however, is included in the eXploits Blocklist (XBL). We advise any users currently accessing the CBL through cbl.abuseat.org to reconfigure and query xbl.spamhaus.org. [...] [more]
spamhaus.org    Spam

stats How has GDPR affected Spam?

The real answer is that it is far too early to tell. Various articles currently state that "nothing has happened" as a result of GDPR or "spam has fallen slightly"; however, the true effects of GDPR providing anonymity to domain owners will take a long time to play out. The main crux of the matter isn’t the effect GDPR is having on spam levels, but how it’s hampering organizations from effectively stopping career cybercriminals from defrauding innocent people. [...] [more]
spamhaus.org    Law, Spam, Study

antispam French government provides spam lists

It is not always easy to maintain a good, clean bulk emailing list, but legitimate bulk senders do it routinely. Anybody can do it if they learn how and follow best practice. France might be attempting to use such a "list rental" model. Both the examples we encountered were sent from SendinBlue's network. SendinBlue is an established ESP in France. It has the capability to properly manage a list rental service. France and SendinBlue, please take this hint that the list you are providing to your [...] [more]
spamhaus.org    Spam

antispam Spamhaus Botnet Summary 2016

2016 was a busy year for existing and emerging cyber threats. In the past year, Spamhaus researchers issued listings for over 7,000 botnet Command & Control ("C&C") servers on more than 1,100 different networks. These C&C servers enabled and controlled online crime such as credential theft, e-banking fraud, spam and DDoS attacks. They were also used for the retrieval of stolen data. 2016 will also go down in history as the first year that security issues related to the "Internet of Things" (IoT) not [...] [more]
spamhaus.org    Spam, Study

discussion Network Hijacking on the Rise

As we discussed in a previous article, allocations of IP addresses (IPv4 addresses) are getting hard to come by, especially for spammers. Because the IP addresses they use quickly get a bad reputation as sources of spam, spammers constantly need fresh IPs that are not yet "burned". To get around this problem, spammers increasingly now turn to a cheap and plentiful source of IP addresses by hijacking existing IP address ranges from under the noses of the legitimate owners and ARIN. How is the [...] [more]
spamhaus.org    Spam, Trend, Deliverability

 antispam Subscription Bombing: COI, CAPTCHA, and the Next Generation of Mail Bombs

Internet harassment is becoming an increasingly ugly and widespread issue, and over the weekend of August 13-14 it spilled into territory we could do something about. After a few weeks of low level activity, over that weekend some unknown cyber criminals launched a targeted attack on over 100 government email addresses, using bots to create mailing list subscription requests at the rate of over 1000 per minute. Effectively, this was a denial of service attack, rendering the government mailboxes [...] [more]
spamhaus.org    Listbuilding, Listhygiene, Spam

 discussion On the dubious merits of email verification services

Listwashing and spamtrap washing services help spammers. They do not help list owners who have done proper opt-in acquisition and list maintenance, nor do they help mail receivers (including both Postmasters and mailbox owners) who rely on spamtrap data to keep spam off their servers and out of their mailboxes. These services might be of marginal help for point-of-sale typo'd addresses (but it won't catch many typo traps, despite tricks the verifiers use to detect those) or in the few edge cases of [...] [more]
spamhaus.org    Listhygiene, Spam, Deliverability

antispam The DMA kicks spam up a notch

Spamming is always bad, but it is just plain foolish to spam addresses at spamhaus.org. While Spamhaus SBL listings are based on much wider views of spam than our own mailboxes, our mailboxes can tell us what we should look for. So when over the weekend the U.S. Direct Marketing Association (DMA) decided to spam, it would have been wiser to leave Spamhaus CEO Steve Linford's email address off the list. [...] [more]
spamhaus.org    Spam

discussion Answers about recent DDoS attack on Spamhaus

At this time The Spamhaus Project is getting more press enquiries than we can personally respond to. Below is a list with the most frequently asked questions, along with our answers. If you are in need of any additional information please do not hesitate to contact us but we cannot guarantee a quick response. Our staff are almost all investigators and engineers who focus on dealing with spam and malware issues. [...] [more]
spamhaus.org    Spam

 discussion Problems seen in transactional messages

In addition to other sources of data, The Spamhaus Project uses all sorts of spamtraps; we haven't suddenly started using typo domains (domains a few characters different than a popular domain) as a data source. We have been doing this for well over a decade. Change is a constant at Spamhaus as elsewhere, of course, and some things did change in or soon before December 2012. These included greater cross-referencing amongst our various spamtraps, closer communication amongst their maintainers, and [...] [more]
spamhaus.org    Deliverability

antispam Spamhaus Wins Final Appeal in E360 Case

On the 2nd September 2011 Spamhaus won its final Appeal to reduce a baseless $11.7 million default judgment down to $3 (three dollars). The US Court of Appeals for the Seventh Circuit twice vacated judgments made by an Illinois District Court which had twice awarded fabricated 'lost profits' to an Illinois-based spammer. [more]
spamhaus.org    Law, Spam

antispam Spamhaus: The one year anniversary of the DBL brings a new zone

Spammers have resorted to new tactic: Using URL shortening services (such as bit.ly, is.gd, goo.gl, t.co). Spammers know that ISPs and email providers will be less inclined to block them as it can cause false positives. Spamhaus created a new "URL shortener/redirector" zone in the DBL. By returning a specific code for this zone, filter designers and end-users of the Spamhaus DBL can decide what to do with the information (e.g. block or score msg). Also: http://bit.ly/dPFvMK [more]
spamhaus.org    Spam, Deliverability
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