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Luke Leal

121 posts
Luke Leal is a member of the Malware Research team and joined the company in 2015. Luke's main responsibilities include threat research and malware analysis, which is used to improve our tools. His professional experience covers over eight years of deobfuscating malware code and using unique data from it to help in correlating patterns. When he’s not researching infosec issues or working on websites, you might find Luke traveling and learning about new things. Connect with him on Twitter.
Labs Note
  • Sucuri Labs
  • Website Malware Infections
  • Website Security

How Some OTP Systems Can Be Used to Prank Spam

  • Luke Leal
  • July 25, 2018
I recently came across an interesting index.php file and its corresponding directory on a compromised website. I loaded it in a testing environment and immediately…
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Labs Note
  • Sucuri Labs
  • Website Malware Infections
  • Website Security

Hackers Are Just as Vulnerable as You

  • Luke Leal
  • June 15, 2018
I came across some interesting defacement pages recently and noticed a peculiar JavaScript injection included within each source code of the defaced websites. As shown…
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ryptomining Through Disguised URLs
  • Security Education
  • Website Security

An Old Trick with a New Twist: Cryptomining Through Disguised URL Shorteners

  • Luke Leal
  • May 22, 2018
As we have previously discussed on this blog, surreptitious cryptomining continues to be a problem as new methods emerge to both evade and hasten the…
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Labs Note
  • Sucuri Labs
  • Website Malware Infections
  • Website Security

IPv6 address in malicious Javascript redirect

  • Luke Leal
  • November 29, 2017
We recently came across a file that shows an interesting case with a Javascript malicious code injection in a website’s custom script file, though it’s…
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Labs Note
  • Sucuri Labs
  • Website Malware Infections
  • Website Security

Checking blacklisted domains or IP for spamming

  • Luke Leal
  • February 8, 2017
Often times we will encounter websites that have been injected with a redirect and these can vary from blackhat SEO tactics for boosting domain rankings…
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Labs Note
  • Sucuri Labs
  • Website Malware Infections
  • Website Security

Search and Backdoor

  • Luke Leal
  • January 18, 2017
The ubiquity of “unlimited” shared hosting platforms has incentivized malware in trying to infect as many adjacent website directories as it can to increase its…
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Labs Note
  • Sucuri Labs
  • Website Malware Infections
  • Website Security

Camouflage does not have to be advanced to be effective

  • Luke Leal
  • January 12, 2017
Often times a malware author will try to provide some type of camouflage to their malware’s coding in an effort to disguise an unsuspecting eye…
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Labs Note
  • Sucuri Labs

Not that impressive hack tool

  • Luke Leal
  • December 27, 2016
There is often a misconception regarding the tools that attackers implement in their malicious activity, and that misconception is that they must be using advanced…
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cpanel redirects
  • Security Education

Ask Sucuri: Can Your cPanel Page Be Maliciously Redirected?

  • Luke Leal
  • November 29, 2016
Many webmasters may not be aware that hackers are able to maliciously redirect cPanel pages. The specific tactic we describe in this article is unique.…
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Labs Note
  • Sucuri Labs

Spam SEO Injector Circumventing Defense Techniques

  • Luke Leal
  • November 29, 2016
I was assisting a client with their compromised website and came across a file called unsave.php that was primarily used to inject a rewrite into…
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  • WordPress Security

Analyzing and Cleaning Hijacked Google SEO Spam Results

  • Luke Leal
  • August 11, 2016
Blackhat SEO spam comes in many forms, and one of the most nefarious is hijacked search results. This happens when search engines crawl and display…
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