As seen on Help Net Security written by Hadar Blutrich.

The client-side landscape has been overrun by third-party script attacks executed by malicious attackers utilizing formjacking or other methods made famous by the Magecart attack group.

Many companies assume their current security stack ensures protection for these seemingly basic attacks, but in reality, they open a can of worms and you may not even know you’ve been attacked. Take a read below to see some of the common misconceptions regarding client-side protection, these dedicated threats and if your business is in fact safe.

Myth #1 – I don’t need to worry about client-side security unless I have a virtual shopping cart/eCommerce

While formjacking is heavily concentrated in online retail, there is a significant weakness in other pertinent verticals as only a few lines of code can interrupt any organization that collects personal information on a website.

Attackers also utilize malicious JavaScript injections running almost seamlessly with your third-party vendor scripts that a website utilizes to improve performance or experience. These are all areas of potential vulnerabilities and if not monitored, can prove costly.

Myth #2 – I have a firewall, WAF and a secure connection so I’m safe from these attacks

Firewall, WAF, secure connection and many other solutions are focused on securing internal servers and the communication between the browser and these internal servers. Formjacking and Magecart attacks are executed on the user’s browser and in many cases, load from a remote server. This client-side connection operates completely outside of the security capabilities an organization deploys to secure the server side of the browser session.

Myth #3 – RASP or DASP catches formjacking and Magecart-type attacks

Dynamic Application Security Testing (DAST) is usually active on a pre-production environment and does not cover live sites. The few who run DAST on a live site will simulate a few user profiles but cannot possibly scale this solution to monitor and detect all web sessions.

As third parties change their behavior from user to user, DAST is largely ineffective in detecting attacks on large production networks and completely ineffective at preventing these types of attacks. Detection methodologies do not help organizations fulfill compliance guidelines requiring customer data privacy.

RASP is Runtime Application Self-Protection; it exists only on the Java virtual machine and .NET Common Language Runtime. Since it will not run on the actual live site, third parties are outside of its detection scope. Again, RASP is not intended as a prevention solution. Detection methodologies do not help organizations fulfill compliance guidelines requiring customer data privacy.

Myth #4 – CSP and other page headers will stop Magecart attacks

CSP is often being suggested as the solution for Magecart attacks. Although it can be part of the solution, by now we know that a lot of the Magecart attacks are being done from trusted domains. Take for example the 24/7 chat hack that captured payment card information from huge enterprises websites such as Delta Airlines, Sears, Kmart, and BestBuy. This tool was trusted by those firms and needs to be whitelisted by the CSP in order to work.

Other headers such as HSTS are sometimes also mentioned as a possible solution but all of us understand that by now attackers are sophisticated enough to use SSL (https) when loading their payload to avoid this header as well.

Continue reading the article here.

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