TitanHQ’s WebTitan is a powerful web filtering solution that helps businesses control the web content that can be accessed by its employees, but how does WebTitan work and how can the solution improve an organization’s security posture?

Why Are Web Filters Necessary?

Many businesses choose to implement a web filtering solution to prevent employees from accessing inappropriate web content such as pornography or to stop work computers from being used to download illegal content such as pirated films, music, and TV shows. A category-based web filter allows businesses to block certain types of web content with ease, such as adult material and P2P file sharing websites.

While content filters can achieve those aims, perhaps a more important function of web filters is to block web-based threats such as malware and phishing websites. Many businesses choose to deploy WebTitan to block these threats, but how does WebTitan work?

How Does WebTitan Work?

WebTitan Cloud is a 100% cloud-based web filtering solution that serves as a semi-permeable membrane between an organisation’s users and the Internet. When an end user attempts to access a particular URL that does not violate an organization’s acceptable Internet use policy, the request is honoured. Since there is no latency, the speed at which the website is loaded is the same as if no filtering mechanism is in place.

Unknown to the user, when an attempt is made to access a webpage, the DNS request is sent to WebTitan Cloud which determines whether the request should be allowed or denied.

If the user attempts to access a gambling website and the gambling category has been blocked through WebTitan Cloud, the user will be advised that their request has been denied and access to the site will be prevented. But how does WebTitan work as far as malicious websites are concerned? How are malicious URLs identified and blocked?

How Does WebTitan Block Access to Malicious Websites?

How does WebTitan determine which URLs are benign and which ones are malicious, and how are those checks performed in real-time?

To block malicious sites, WebTitan uses a crowd-sourced approach and obtains a constant stream of URLs for analysis. These ActiveWeb URLs come from websites actively visited by a global network of customers through high traffic markets such as subscriber analytics, networks security, IOT, and ad tech.

This traffic is used to train WebTitan’s human-supervised Machine Learning Systems to detect, monitor, and categorize threats. Using in house and third-party tools, WebTitan performs link, content, static, heuristic, and behavioural anomaly analyses to categorize threats. When threats are detected, the WebTitan team profiles, tests and validates those threats. Once threats have been validated, they are blocked with false positives used to train the system to improve future accuracy.

In contrast to many DNS-based systems, which only work at the domain level, WebTitan works at the path level and is capable of blocking individual webpages rather than entire domains. The majority of malicious URLs in the WebTitan database are marked as malicious at the path level – 99.7% of IP-based URLs and 88.35% of non-IP-based URLs.

WebTitan performs checks of websites that have previously been marked as malicious to determine whether they still contain malware or other threats. The WebTitan Malicious Detection Solution revisits up to 300,000 sites to check whether they are still infected or have been cleaned, and the database is updated accordingly. Sites previously marked as malicious can be accessed once they have been determined to be safe.

What Web-Based Threats Does WebTitan Block?

There are ten main web-based threats that WebTitan protects against:

  • Malware distribution points
  • Ad fraud
  • Botnets
  • Spyware and questionable software
  • Phishing and other fraudulent sites
  • Command and Control (C2) servers
  • Malware call-home addresses
  • Compromised sites and links to malware
  • Spam URLs
  • Cryptocurrency mining

With WebTitan, businesses not only have highly granular control over the types of sites that can be visited by their employees, a wide range of malicious sites are also blocked, preventing malware and ransomware infections, data theft, data exfiltration and fraud.

You can view further information about WebTitan on this link. (PDF)