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Marc Kranat

11 posts
CISM CISSP Marc Kranat is Sucuri’s Enterprise Firewall Supervisor who joined the company in 2014. Marc’s main responsibilities include providing support to high-value clients. His professional experience covers over 20 years in cyber and IS security and project management. When Marc isn’t checking firewall logs and configurations, you might find him acting as an assistant to his photographer wife, or wranging his Husky. Connect with him on Twitter.
Why Your IP is Blocked & How to Fix It
  • Security Education
  • Web Pros

Why Your IP Address is Blocked & How to Fix It

  • Marc Kranat
  • June 6, 2023
Imagine this scenario: You’re sipping a delightful cup of tea (I’m English) while catching up on the latest news when suddenly – wham! You find…
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  • Security Education
  • Web Pros
  • Website Security

Troubleshooting ERR_SSL_PROTOCOL_ERROR: How to Fix this Pesky Error in 6 Steps

  • Marc Kranat
  • May 11, 2023
As a website owner (and frequent website visitor), you might have encountered the notorious ERR_SSL_PROTOCOL_ERROR at least once.
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Problems with Email Server after Malware Infection
  • Security Education
  • Sucuri

Help! My Email Server Got B0rked & I Have Problems After Malware Infection!

  • Marc Kranat
  • February 14, 2023
The Sucuri Firewall functions as a reverse proxy. A simple change to your DNS settings is all it takes to thoroughly filter incoming traffic to…
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Bad Paths & The Importance of Using Valid URL Characters
  • Security Education
  • Website Security

Bad Paths & The Importance of Using Valid URL Characters 

  • Marc Kranat
  • January 10, 2023
To ensure that your web files and pages are accessible to a wide range of users with various different devices and operating systems, it’s important…
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  • Security Education
  • Web Pros
  • Website Security

Poodle and Doodle, FUD and the Sucuri WAF

  • Marc Kranat
  • April 19, 2022
On any given day, Sucuri sees thousands of clients go through the PCI compliance process. The requirements outlined by the Payment Card Industry Data Security…
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  • Security Advisory
  • Security Education
  • Website Security

UCEPROTECT Scam: When RBLs Go Bad

  • Marc Kranat
  • February 12, 2021
What is a Realtime Blackhole List (RBL)? A Realtime Blackhole List (RBL) contains lists of email servers, domain names, and IP addresses that are associated…
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Server Side Data Exfiltration via Telegram API
  • Security Education
  • Sucuri
  • Website Security
  • WordPress Security

Optimizing Performance and Behavior with WordPress and the Sucuri WAF

  • Marc Kranat
  • February 9, 2021
Aside from providing significant protection from a wide range of threats, the Sucuri WAF also acts as a CDN due to its caching capabilities and…
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VPN: A Key to Securing an Online Work Environment
  • Security Education
  • Website Security

VPN: A Key to Securing an Online Work Environment

  • Marc Kranat
  • March 27, 2020
The current COVID-19 epidemic is changing the way people work, rapidly moving to working remotely as I have done for 20 years. I am providing…
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  • Security Education
  • Website Security

PCI Compliance, Penetration Testing, and the Sucuri WAF

  • Marc Kranat
  • March 6, 2020
Our support team is often asked, “Can we test our site through the Sucuri Web Application Firewall?” The answer is always yes, with a caveat.…
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  • Security Education
  • Web Pros
  • Website Security

SSL Testing Methods

  • Marc Kranat
  • February 17, 2020
Not all SSL configurations on websites are equal, and a growing number push for HTTPS everywhere. There is an increasing demand to check and quantify…
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Targeted Phishing Against GoDaddy Customers

  • Marc Kranat
  • December 11, 2014
I do get a lot of phishing emails, we all do, but as security professionals we tend to recognize them immediately. Either the syntax is…
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