Why do emails with links to obvious sexually explicit sites continue to get delivered?
Spammers specifically design their email to bypass the SPAM filters, eg. they consistently change the sender information and/or change the links in their emails and/or use distorted images. Barracuda Central receives feedback from customers about specific SPAM attacks and in response they determine the optimal methods to prevent these examples subsequently Macquarie receives updates from Barracuda Central every 30 minutes. Typically we see that a specific attack type is “Blocked” within a 24 hr period, many of these email that you have seen in previous weeks continue to be sent but are blocked. SPAM rates continue to increase. Engineers at Barracuda Central work around the clock to identify new spam fingerprints which are then updated on all Barracuda Spam Firewalls through Barracuda Energize Updates. A message “fingerprint” is based on commonly used message components (e.g., an image) across many instances of spam. Fingerprint analysis is often a useful mechanism to block future insta
