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Cybersixgill vs ReliaQuest GreyMatter comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Cybersixgill
Ranking in Digital Risk Protection
8th
Average Rating
8.8
Reviews Sentiment
6.8
Number of Reviews
7
Ranking in other categories
Vulnerability Management (46th), Threat Intelligence Platforms (TIP) (9th), Attack Surface Management (ASM) (20th)
ReliaQuest GreyMatter
Ranking in Digital Risk Protection
11th
Average Rating
9.6
Reviews Sentiment
8.1
Number of Reviews
2
Ranking in other categories
Managed Detection and Response (MDR) (16th), Extended Detection and Response (XDR) (30th)
 

Mindshare comparison

As of September 2026, in the Digital Risk Protection category, the mindshare of Cybersixgill is 4.5%, up from 4.3% compared to the previous year. The mindshare of ReliaQuest GreyMatter is 2.0%, up from 1.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Digital Risk Protection Mindshare Distribution
ProductMindshare (%)
Cybersixgill4.5%
ReliaQuest GreyMatter2.0%
Other93.5%
Digital Risk Protection
 

Featured Reviews

Proactive dark web intelligence has reduced breach impact and protects organizations quietly
Cybersixgill has one of the largest data lakes around. I think the way they can be improved is to be able to initially during the onboarding, make sure that the false positives are correctly addressed to really do the tweaks that need to be done to filter through exactly what the organization is trying to accomplish and give them the outcomes they are looking for without all the extra noise or chatter. I just think during the onboarding, that is the most crucial part to make sure that the organizations who purchase Cybersixgill ensure that they actually have the right person or persons to go through the onboarding to make sure that the data lake feeds can be properly set up and organized so it can filter through the noise and the chatter.
MK
Senior Security Analyst at Tata Consultancy
Unified security monitoring has reduced alert fatigue and improves proactive threat hunting
I use real-time monitoring in ReliaQuest GreyMatter, which significantly improves my security posture. The unified interface helps reduce alert fatigue. I would estimate it saves around 20% in alert fatigue reduction. The automated threat hunting capabilities in ReliaQuest GreyMatter help me stay ahead of threats. The machine learning algorithm benefits my threat intelligence by providing deeper insights and predictions. I use various metrics to rate the success of the predictive threat intelligence in ReliaQuest GreyMatter.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The advanced analysis has made our security operations more efficient. It has also potentially given us quicker access to data that we might not have otherwise located."
"If you are looking for threat intelligence that can cater to various needs from IOC to threat advisories and along with dark web intelligence, then you should try Cybersixgill."
"I have been very vocal about how much this tool has helped."
"The size and scope of the solution’s collection is amazing, and when we compare what other solutions can and cannot do, we see how Cybersixgill Investigative Portal is superior in many ways."
"The solution’s approach of using limited open source intelligence and focusing, instead, on the Deep Web and Dark Web is what seals the deal. That is why I like them. I have other tools that I can aggregate all the open source intelligence from. I value Cybersixgill because it provides access to things that no one else does."
"They also provide some of the greatest notification capabilities. I put in a customer's company name and domain names, or sometimes I put in their IP addresses as a keyword. Once Sixgill collects information that includes those keywords, they then provide us email notifications. That means we can catch information related to our customers as soon as possible."
"Rather than hiring more analysts, we have been able to do more with less and automate some of our investigation functions."
"To be diligent for the customer, we usually go into Cybersixgill Investigative Portal to analyze and search things. The solution tells us the reputation of cyber threat actors. So, if someone has a reputation of one, it is a really bad idea to care about what that person is saying. However, if you find someone with a reputation of nine, then there is a high probability that we need to address the problem. You can get information about these type of actors in Cybersixgill Investigative Portal. They have a huge collection, which is like having the rules/goals of the dark web and deep web without having to go there. Our analysts avoid going dark web because they have Cybersixgill Investigative Portal and can get the news from their browser, searching wherever they want."
"ReliaQuest GreyMatter saves around 60% of time or resources."
"ReliaQuest GreyMatter has helped us to reduce security incidents by 89%, which is a significant amount of incidents we have seen."
 

Cons

"The breadth of access to data is good, but there are gaps."
"We need real-time updated information. If we could have this, it would be amazing. For example, if someone was posting something, then ten second later, it was on the platform. Sometimes, it takes a minute or hours right now, depending on the forum."
"Sixgill has strong capabilities based on search queries, but there is some difficulty in using Sixgill. Their querying is very powerful but it can be difficult. It's not hugely complex but you need some skill to use Sixgill querying."
"I want to highlight that sometimes Cybersixgill retrieves leak information from the past two years, which can be very irrelevant to the client."
"Regarding their scraping abilities, things could be solidified. There are definitely improvements that could be made on the specificity for setting certain queries."
"The breadth of access to data is good, but there are gaps. More data would be my suggestion because the platform is good and I have no complaints about the system. I think it is just a case of always trying to get more data sources."
"I think the way they can be improved is to be able to initially during the onboarding, make sure that the false positives are correctly addressed to really do the tweaks that need to be done to filter through exactly what the organization is trying to accomplish and give them the outcomes they are looking for without all the extra noise or chatter."
"We need real-time updated information. If we could have this, it would be amazing."
"Areas that have room for improvement include user interface and integration."
 

Pricing and Cost Advice

"The pricing is cheap compared with Recorded Future. Sixgill's cost-effectiveness is very good."
"The pricing and licensing are good. It is expensive for us because the US dollar is quite strong compared to our dollar. Otherwise, it is quite reasonable for what it is. All the tools in the market are around the same price from my experience."
"Sometimes, Cybersixgill Investigative Portal is cheaper than its competitors."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
13%
Comms Service Provider
10%
Outsourcing Company
8%
Manufacturing Company
7%
Financial Services Firm
10%
Manufacturing Company
9%
Construction Company
8%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Cybersixgill Investigative Portal?
My experience with pricing, setup cost, and licensing is that the pricing was very well priced. It was not the cheapest, but it was not the most expensive, and based on the needs of the customer, t...
What needs improvement with Cybersixgill Investigative Portal?
Cybersixgill has one of the largest data lakes around. I think the way they can be improved is to be able to initially during the onboarding, make sure that the false positives are correctly addres...
What is your primary use case for Cybersixgill Investigative Portal?
My main use case for Cybersixgill is dealing with cyber threat intelligence. When an organization's information was breached or found on the dark web, I was able to immediately notify them through ...
What needs improvement with ReliaQuest GreyMatter?
Areas that have room for improvement include user interface and integration.
What is your primary use case for ReliaQuest GreyMatter?
I use ReliaQuest GreyMatter for detection and response, XDR, and SIEM. The best features I like about GreyMatter the most are its efficiency and user experience.
 

Overview

 

Sample Customers

Current customers include large enterprises, financial services, manufacturing, GSIs, MSSPs, government and law enforcement entities.
Information Not Available
Find out what your peers are saying about Cybersixgill vs. ReliaQuest GreyMatter and other solutions. Updated: September 2026.
913,924 professionals have used our research since 2012.