Category Archives: Spam filter

Updates – report/retrieve in lists and pausing filtering

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Yesterday we made some updates which hopefully will continue to improve the experience of SpamDrain. We added the possibility to report or retrieve directly in the message lists (Archive and Report), so you do not need to click the message in order to report it. The Report button appears once you hover over the row. Note that you will not need to confirm the reporting so before you click, be sure you really wish to report it as spam.


We also added the hover feature in other lists, so actions appears once you move your mouse over the row. In the filtered address lists, for example, you will now see the Delete icon and the new Pause icon when moving the mouse over the row. Pause filtering is a new feature we have added to give you more control over your SpamDrain account.

Clicking the Pause button will pause the filtering for this address. Once paused, SpamDrain will stop accessing your e-mail account. If you are using domain filtering, SpamDrain will simply let everything through for the paused address.

Once paused, a Play icon is displayed instead which once clicked will start the filtering again.

This pause feature is useful if you have problem with your e-mail access and want to see if SpamDrain is locking your mailbox or if you simply wish to go back to the good old times when tons of spam reached your inbox 😉

We have also made some minor improvements in the login and sign up user interface.

The next few weeks we will continue working with minor improvements and adding help documentation where needed.

Feel free to comment the changes we made recently. Your opinion is the most valuable we have!

Expert warns of insufficient virus protection

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There is an interesting article on viruses and filters in a Swedish newspaper today. Experts warn us that some filters are not efficient enough. They claim that some filters only catch 30% of the harmful e-mails. The reason for this being that the virus makers are quick at making new version and varieties of the code so it is hard to keep a traditional filter updated.
At SpamDrain we use artificial intelligence to continually refine the filtering process. This means that the filter can ‘learn’ what is spam and what is valid e-mail. The filter can therefore keep itself updated and quickly learn new tricks used by hackers to get their e-mails through spam filters.
This works quite nicely in Spamdrain when filtering spam and e-mail viruses. It would though be interesting to know if one could do something similar with desktop virus protection. I know that anti-virus companies have done some efforts in trying to “learn” the patterns of viruses and block viruses they don’t know about, but it’s unclear how well these techniques work.

Has Angelina Jolie invited you to join Facebook?

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The last days we have seen a massive spam attack claiming that Angelina Jolie has invited you to Facebook. As usual the e-mail is well formed and appears to be a normal Facebook e-mail. However, instead they are linking to sites containing viruses or selling certain medications. The spammer sending these spam is currently the largest spammer according to Spamhaus and they have hundreds of domains registered. They are using bot nets and Chinese web hosting for their web site.

We are also seeing a lot of Twitter spam e-mails. These messages claiming someone was trying to steal your Twitter account password. To fix that you it say that you should open the attach file, which obviously is a virus. (Just in case you don’t get this, you should NOT open that file if you receive one of these messages :-)). My guess is that the virus is yet another trojan converting your computer to a spam sending machine.

So, the trend is pretty clear: spammers also try to use social media – or at least the names of well known social media services like Facebook and Twitter.

Spam appearing like Twitter e-mail updates

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Maybe  you have seen the spam messages that looks just like a normal update from Twitter? The design and texts are identical to the Twitter original, informing you that you have 3 new messages or that someone has started to follow you. However, when you click the link that appears to go to Twitter, you end up at some drug store that sells these famous blue pills – or at least a cheap copy of them. Continue reading →

Focus on scalability, stability and user experience

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Lately we have been working hard on handling the recent growth we have had. As you probably have noticed we have had some stability problems and we apologize for that. The last weeks we have made some changes to our infrastructure and started to migrate to new servers. This work will increase performance and provide better fail over than before. We hope this work will be finished within the next 2 – 3 weeks. We’re expecting to carry out the remaining changes without any disruptions to the service.

As a necessary step we have also moved some of our system to the cloud. This will improve the performance of our database servers and will also let us handle backups more efficiently.

In parallel with this work we have also worked on making minor changes to improve the experience of the overall service, such as improving your SpamDrain reports, adding support for payments in USD and support for payments through Paypal. We have also updated our price lists so they are easier to read. The next step on the web site is to make the sign up and on boarding as easy as in our mobile applications. That will be exciting work and hopefully we will be able to help even more people to get rid of annoying and time consuming spam messages.

Until next time – we wish you e-mail peace of mind and hope that you continue reporting your spam to us. That’s what makes the SpamDrain service so fantastic!

Google accounts sending spam to contacts in address book

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Have you experienced that spam messages are sent from your address? I can guarantee you that you’re not alone. This happens to all of us. The reason is that the protocol used for sending e-mail, SMTP, is a fairly simple protocol designed in the very beginning of the internet’s history. Anyone may basically put any e-mail address in the From field when sending a message. Spammers use this a lot to make it appear like a friend or a colleague is sending you an important message. Continue reading →

One e-mail virus for every tenth valid message

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The last 5-6 weeks we have seen an increase of viruses blocked by the SpamDrain filter. The virus proportion has raised to levels around 2 – 3 %. This doesn’t sound much but compare this 0.2 -1 % for previous weeks. Two per cent corresponds to 15,000 viruses per week for our customers only. Since the spam proportion is around 80 % it means that for every tenth valid message there is a virus e-mail. Imagine the damage all these viruses could have made. Continue reading →