Email and Web Filtering

Cyber Security > Email and Web Filtering

Email and Web Filtering

Like most organisations email will be the primary way in which you communicate and information of all types has passed through it including sensitive data.  In many ways email is a quick way to communicate both trivial and important matters and this is where exploits can start.  To understand why email is the primary method to deliver ransomware and malware we need to understand some statistics.

  • Ransomware cost businesses over US$76 billion last year
  • 269 billion emails sent daily – figures up to the end January 2017
  • 121 emails – received on average per person per day
  • 75% of email is spam

Just looking at this and you can soon see that employees are under immense pressure to identify what is genuine and what constitutes malicious email.  A lapse in concentration and you can inadvertently click on an attachment or visit a malicious website which will deliver a ransomware attack.  Cyber criminals are far more sophisticated now as well as Phishing, attacks can be socially engineered from freely available information and Spear Phishing attacks devised to focus on individuals.  Look at what happened to Google and Facebook who were subject to a US$100 million scam!  We know that email is the preferred method by which to deliver malicious attacks, this is an area that’s particularly well catered by security Vendors.  Our first and last line of defence has always been our end users and by combining a suitable technology with training a robust layer of protection can be maintained.

What Is Email and Web Filtering?

Web filtering in its simplest form is the blocking of undesirable websites but using this method doesn’t work in today’s threat landscape.  Cyber Criminals will build malicious sites in preparation for Phishing campaigns which have no negative information about them yet.  This is where products like Cisco Umbrella score, it has the intelligence to look at the world wide web and align new domains not just the sites with owners of other malicious sites and stop visits immediately.  This move from reactive to proactive protection is a shift in how threats are now being identified and can provide a far more robust method of detection than ever before.

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