Why SiteLock’s Poor Cleanups Lead to Website Reinfections

If you follow our blog you will have seen us say before that we are often brought in to re-clean hacked websites after another has cleaned and then it hacked again. And as we have said before, while it isn’t always the fault of a company that did the a clean up that a website has gotten hacked again, what we have found is that in almost all the instance where we are brought in to re-clean websites the first company has cut corners. As one of three main components of a proper cleanup is trying to determine how the website was hacked and when we ask if the source of the hack was determine by the first company that answer is almost always that trying to determine that never even came up.

One of company that comes to mind as one that doesn’t do proper cleanups is SiteLock. As we seen for years they don’t upgrade the software on the website (which is large part of one of the other main components, getting the website secure as possible) and they don’t determine how the website was hacked.

So we were somewhat surprised to see a recent SiteLock had a post on their blog “Why Website Reinfections Happen”, which while written to get around the issue, is really a indictment of how SiteLock’s improper cleanups leaves websites vulnerable to being reinfected.

In the post they start out by explaining why websites get reinfected:

The short answer is that it’s most likely due to unresolved vulnerabilities. While it may seem like you’ve been singled out and targeted by some menacing hackers, most of the time that isn’t the case. The majority of website compromises are preceded by automated campaigns that locate websites vulnerable to a particular exploit the hacker wishes to employ.

That would dictate as part of the original cleanup you would want to resolve the vulnerability, so what does SiteLock claim are the causes of the vulnerabilities.

Up first is outdated software with vulnerabilities:

It is for this reason that we stress not only cleaning the website, but also patching all software and identifying and remediating all vulnerabilities present on the website.

While they stress this, their cleanup don’t actual involve updating the software and neither doing their ongoing security services. They do try to get to what they actual provide by saying this:

It is also advisable to take a more proactive approach in the future by utilizing a web application firewall (WAF) to protect your website.

The problem with this is using a WAF isn’t more proactive, instead it is reactive, as the WAF often would need to have code or a rule written to protect against a vulnerability, so unless the WAF maker is aware of a vulnerability before it is fixed that will happen after the software is able to be upgraded. There is another problem with this that trying to protect in this manner is more likely to not work properly, as can be seen with what happened recently to another security Trend Micro, decided not to keep their one of their WordPress installations up to date.

Also, worth pointing at this point is a post from yesterday where we look at the fact that one of SiteLock’s major web hosting partners (which also happens to be run by SiteLock’s owners) is offering installing outdated and insecure software on their customers websites.

Next up is unfixed vulnerabilities, which are usually newly discovered (unless a software developer doesn’t fix vulnerabilities promptly when they are notified of them):

On the less common end of the spectrum we see compromises due to undocumented vulnerabilities, where the bad guys were the first to the punch with discovering that a vulnerability exists.

To know if there is an unfixed vulnerability that was exploited you would need to know how the website was hacked, which isn’t what SiteLock does. Instead they get back to the WAF:

In this instance, your best defense is taking a proactive approach by implementing and training a web application firewall (WAF) to block future attacks.

There is no explanation of how you are supposed to be able to train the WAF to block future attacks, when you haven’t determined how the attack happened. Going back to previous issue, it also would be more effective to get vulnerability fixed in the software than trying to block attacks, because sometimes even a minor change can evade a block, whereas properly fixing the vulnerability at its root should stop any attack. Doing this would also would likely leave others using the same software vulnerable unless they used a WAF that provided protection against the vulnerability.

Also worth noting here, is that while SiteLock promotes the WAF that is included in some of their services as being their own it is fact Incapsula’s WAF.

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