Recently we came across a malicious campaign injecting scripts that push fake browser updates onto site visitors. This is what a typical fake update request looks like: Users see a message box that says it’s an “Update Center” for your browser type (in my case it’s Firefox, but they also have such messages for Chrome, […]
Tag Archives: Conditional Malware
Fake Font Dropper
Every day we see different website infections. When we receive unusual or interesting cases, our researcher instincts are triggered to investigate the unusual website behavior in order to understand how new infections work. In this case, the odd behavior was the website’s pop-up window claiming there was a missing font. The Unwanted Popup Window A […]
Unwanted “Shorte St” Ads in Unpatched Newspaper Theme
Unwanted ads are one of the most common problems that site owners ask us to solve. Recently, we’ve noticed quite a few requests to remove intrusive “shorte st” ads that they never installed on their sites themselves. My colleague Denis Sinegubko of UnmaskParasites helped to investigate this case. Shorte[.]st is a service that hijacks links, […]
When Your Plugins Turn Against You
Every day we face countless cases of sites getting compromised and infected by an attacker. From there, the sites can be used for various operations like spam campaigns, malware spreading or simply to damage your SEO ranking among other events. The threat may not always come from outside though. There are occasions where we are […]
Malicious Image Defacement Hidden from Search Engines
After carefully designing a theme and images that represent your brand, nothing is worse than seeing a malicious image suddenly associated with your business or website. In a recent blog post, we discussed a case in which a lewd image was showing in the Google Maps Images section for one of our client’s businesses. Today […]
vBulletin Used to Show Malicious Advertisements
In the past, we have seen a massive amount of vBulletin websites compromised through the VBSeo Vulnerability. Attackers have been infecting vBulletin websites since 2012 with this malware, and more recently with a new variation of the same infection. Ever since this new development, the table datastore in vBulletin has been a prime candidate for […]
Joomla Security – Pornography Spam Campaign in the Wild
One of the worst experiences for a website owner is finding out that the search results for your site have turned into a pharmacy, a fashion outlet, or even a porn dump. Those unwanted keywords are a result of Search Engine Poisoning (SEP) attacks. This blackhat SEO technique is used by attackers to take advantage […]
Website Malware Targets Mobile Platforms
Navigating the web on a mobile device can be tricky even when you’re browsing clean sites. If hackers are involved, the frustration of a pop-up can turn into the dangerous possibility of harmful mobile malware. The increase in mobile internet browsing has prompted attackers to adapt their techniques, targeting mobile-specific platforms and distributing spam and […]
PrestaShop Attack Steals Login Credentials
Attackers compromise sites with a number of goals in mind – also referred to as actions on objective. In some instances they aim to abuse resources or gain SEO power, and in others they are seeking access to sensitive data, also known as data exfiltration. The Rise in Cyber Stealing Lately we’ve noticed an increase […]
Ask Sucuri: Is My Website Hacked?
Having your website hacked can be a devastating experience for any website owner. Unfortunately, many website owners rarely know they are infected until days, if not weeks, after the compromise has occurred. Their notification comes in the form of a blacklist or some other alert, including notifications from their users. Neither is ideal. So how… […]
