Hackers perform mass mailing to bombard target users with thousands of spam mails. Most of the spam mails are sent from users’ infected systems forming a zombie network. The IT security industry offers a range of anti-spam security solutions to encounter these spam mails ensuring your protection. It’s crucial to utilize all security technologies like antivirus, firewall, and others to ensure the best and most effective virus protection.
What is a spam filter and How does it work
What is a Spam Filter
Anti-spam or spam filter functions identify and block suspicious and unsolicited emails from the users’ inbox. Older versions check for and divert email with specific word patterns, frequency and subject lines that appear malicious – however, experts find this method was not very effective. Newer spam filter versions use blacklists with updated malware versions and incorporates sophisticated security technologies to rule out any opportunistic spam and other malware infections from entering an email.
How does an email spam filter work?
Spam filtering techniques follow a set of protocols to examine if emails entering your inbox are spam or not. There are different types of spam filters available and each one offers different features:
- Header filters – Inspects email header for false information
- Content filters – Inspects word patterns in the text body and subject line to identify spam.
- Rules-based filters – Works based on a specific set of rules defined by the user.
- Challenge-response filters– Sender has to enter a code before receiving permission or the ability to send an email.
- Permission filters – Emails enter the inbox only if they are approved by the recipient
Spam filtering solutions are implemented in 3 ways – cloud, on-premise or software installed on a PC that is collaborated with an email client. It is critical for business email systems to use an effective spam filter to prevent spam emails from reaching the inbox and protect sensitive business data and confidential customer data.
Protect Business from Dangerous Spam and Phishing Emails
- Avoid sharing financial and personal information through emails – You might end up sharing all your confidential information to a hacker
- Never respond to suspicious looking emails that requests you to share sensitive information.
- Check the website before you share any personal or sensitive information
- Check the website URL. Most of the malware-infected websites look identical to genuine websites – however, the website URL has some spelling errors that is mostly unnoticed.
- If you are not sure if the email is genuine or malicious, check if it is legitimate by contacting the company.
- Install an effective anti-phishing software or spam filter software with the latest updates to ensure protection from the latest security risks. This isolates malicious content and prevents your exposure to malicious content.
- Avoid logging in to your bank account or any other shopping website by clicking a link received through e-mail.
- Above all practice healthy cyber hygiene equipped with a good security software