Greylisting is an effective method for preventing mass spam emails from being sent out. Since this process happens in the background, most users are unaware that their inbox is being protected by greylisting. Here you will learn exactly how this method works on a technical level.
A professional e-mail signature is a standard part of business communication. Private users can also stand to gain from these e-mail additions. But what exactly does a good e-mail signature contain? And which information should your company include when sending messages to customers or business partners?
Have you ever been curious about how an e-mail arrives at the designated recipient? The header area of an e-mail contains a lot more information than just the sender, the subject, the recipient and the date the e-mail was received. By displaying all of the e-mail header you can determine whether the e-mail falls into the spam category. Learn how to decipher the information in an e-mail header.
Scammers send out dubious e-mails attempting to obtain sensitive data from internet users every day. This is known as phishing and isn’t just annoying; fraudulent e-mails cost millions each year as internet users fall victim to them. We reveal how to identify phishing e-mails and how to render your inbox harmless.
Spam e-mails may be annoying, but they’re mostly harmless. What’s more problematic is phishing – a technique whereby fraudsters try to con you by posing as trustworthy sender addresses in an attempt to get hold of sensitive data. These messages appear genuine too, because without a digital signature, it’s very easy to assume a trusted identity online. In order to protect customers and their own...
The Outlook spam filter automatically moves unwanted and potentially fraudulent emails to the junk folder. Even junk mail that doesn’t meet the typical spam criteria can be kept out of your Outlook inbox with the right settings. In case of errors, the Outlook junk filter can be easily adjusted manually.
Billions of spam e-mails are sent daily. These annoying messages cost time and get on your nerves, especially when malware finds its way onto your computer or private data falls into the wrong hands. Just a few small tricks and a bit of caution when dealing with e-mails can remedy the situation.
For years, the captcha has been a necessary evil for securing interactive web applications (e.g. online forms) against spam. The fully-automatic public Turing test distinguishes between computers and humans. The test exposes which automatic queries are performed by spam robots, which then minimizes the administrative effort needed for interactive websites. We present the most common types of...
Botnets are tricky to spot, but they’re all over the internet and they cause all kinds of damage every day. They lurk inconspicuously in the background and use millions of private computers for malicious purposes. This guide explains how botnets work, how to keep them away, and how you can avoid falling victim to an illegal network.
If you send an e-mail without additional security measures, it’s like sending a postcard: if everything goes as planned, the information should arrive unchanged and unread in the recipient’s inbox. However, if someone intercepts the card or the e-mail in transit, they can read the contents without any problem and make as many changes as possible. Just like you would use an opaque envelope to...