In order to address the threat posed by spam emails your company needs to consider implementing an easy to install and manage solution like cloud email security.
Configuring a solution that can boast a spam detection rate of as close to 100% as possible will put you in a position where your company is doing everything reasonably possible to prevent any vulnerability existing on your network.
To achieve as high spam detection rates as possible there are a number of features that are crucial for your group to add. These include:
- URIBL and SUBRL which review IP addresses of incoming emails compared to blacklists of known sources of spam and stop anything that may be untoward from landing in an inbox.
- Recipient verification protocols and Sender Policy Frameworks that will stop delivery of emails that are being shared non-existent mailboxes and emails that may have been spoofed.
- Machine learning processes to allocate spam ratings to emails based on their content and composition. The acceptable spam thresholds that are used for this calculation can be managed by network administrators to make them more or less sentivice.
- Greylisting function to stop any inbound emails from unknown a previously unseen spam email server. They are sent back and the sender is asked to send them again. Spam servers rarely see these requests and fail to return the email. If they do happen to resend it then it will also be subjected to all of the tests mentioned above.
Using all of these features can help your group register a spam detection rate up to 99.9%. It is important to remember that you also have the ability to whitelist some domains and sendes so you are not missing out on any business critical emails due to being very strict in relation to your cybersecurity.
A two-way cloud-based email security is an excellent tool for monitoring inbound and outbound emails. Outbound monitoring will spot email accounts that may have been infiltrated by hackers to share malware to trusted business contacts or to carry out further phishing and business email compromise attacks. Parenting this is massively important as it will prevent you from being placed on a spam blacklist – something that would greatly hamper your company communications and ability to do business effectively.
This is one of the favourite attack vectors of cybercriminals as trusted accounts (i.e. corporate accounts with a good email record) can be leveraged to share malware-infected spam emails to the company contacts. This is much easier than attempting to infiltrate every contact individually from a blacklisted IP address. For the company from which the spam emails are issued, the loss of credibility among its contacts can be just as harmful as if it had sustained a malware or ransomware attack.
Not every infected outbound email happens as a result of a cyber attack. It can also occur due to a staff member using a personal USB stick on a network without being aware that there is a malicious file held on the device.
Using outbound scanning strange patterns and malware in outgoing emails can be detected and this will ensure that your company’s chief communication medium remains in tact.