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Founded Year



Series A | Alive

Total Raised


Last Raised

$15M | 9 mos ago

About GreyNoise

GreyNoise identifies internet background noise caused by benign sources that inflate the volume of security alerts that security operations teams need to analyze. The company collects, analyzes, and labels data on IPs that scan the internet and saturate security tools with noise. This helps analysts waste less time on irrelevant or harmless activity and spend more time focused on targeted and emerging threats. GreyNoise was founded in 2017 and is based in Washington, D.C.

Headquarters Location

1015 15th St NW Suite 600

Washington, DC, 20005,

United States

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Expert Collections containing GreyNoise

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GreyNoise is included in 1 Expert Collection, including Cybersecurity.



4,937 items

GreyNoise Patents

GreyNoise has filed 4 patents.

The 3 most popular patent topics include:

  • Computer network security
  • Computer networking
  • Network analyzers
patents chart

Application Date

Grant Date


Related Topics




Computer network security, Network management, Network analyzers, Computer networking, Network performance


Application Date


Grant Date



Related Topics

Computer network security, Network management, Network analyzers, Computer networking, Network performance



Latest GreyNoise News

Attackers never let a critical vulnerability go to waste

Jan 2, 2023

Help Net Security Attackers never let a critical vulnerability go to waste GreyNoise Intelligence unveiled its research report that dives deep into the most significant threat detection events of the past 12 months. “When it comes to cybersecurity, not all vulnerabilities are created equal, and many of the ones that garner media attention actually turn out to be insignificant,” said Bob Rudis , VP Research & Data Science, GreyNoise Intelligence. GreyNoise added over 230 new detection tags in 2022, representing an increase of approximately 38% from 2021. For its 2022 report, researchers provide insights into: The celebrity vulnerability hype cycle, with a breakdown of the CVE-2022-1388, an F5 Big-IP iControl REST Authentication Bypass How hard attackers will work to never let a critical vulnerability go to waste by looking at the depth and breadth of CVE-2022-26134, a critical weakness in Atlassian Confluence The impact of the CISA Known Exploited Vulnerabilities catalog releases on defenders In addition to insights about the most significant threat detection events of 2022, the report offers predictions for 2023 from GreyNoise VP Data Science Bob Rudis: Expect daily, persistent internet-facing exploit attempts “We see Log4j attack payloads every day. It’s part of the new ‘background noise’ of the internet, and the exploit code has been baked into numerous kits used by adversaries of every level. It’s very low risk for attackers to look for newly-exposed or re-exposed hosts, with the weakness unpatched or unmitigated. This means organizations must continue to be deliberate and diligent when placing services on the internet,” said Rudis. Expect more post-initial access internal attacks “CISA’s database of software affected by the Log4j weakness stopped receiving regular updates earlier this year. The last update showed either ‘Unknown’ or ‘Affected’ status for ~35% (~1,550) of products cataloged. Attackers know that existing products have embedded Log4j weaknesses, and have already used the exploit in ransomware campaigns. If you have not yet dealt with your internal Log4j patching, early 2023 would be a good time to do so,” added Rudis. Expect headline-grabbing Log4j-centric attacks “Organizations have to strive for perfection, while attackers need only persistence and luck to find that one device or service that is still exposing a weakness. We will see more organizations impacted by this, and it is vital you do what you can to ensure yours isn’t one of them,” concluded Rudis. More about

GreyNoise Frequently Asked Questions (FAQ)

  • When was GreyNoise founded?

    GreyNoise was founded in 2017.

  • Where is GreyNoise's headquarters?

    GreyNoise's headquarters is located at 1015 15th St NW, Washington.

  • What is GreyNoise's latest funding round?

    GreyNoise's latest funding round is Series A.

  • How much did GreyNoise raise?

    GreyNoise raised a total of $20.4M.

  • Who are the investors of GreyNoise?

    Investors of GreyNoise include StoneMill Ventures, Paladin Capital Group, Inner Loop Capital, CRV, Radian Capital and 5 more.

  • Who are GreyNoise's competitors?

    Competitors of GreyNoise include CrowdSec.

Compare GreyNoise to Competitors

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Anomali provides a platform for earlier detection and identification of adversaries in an organization's network by correlating tens of millions of threat indicators against real time network activity logs and up to a year or more of forensic log data.

CrowdSec Logo

CrowdSec offers an open-source and collaborative security suite that can analyze visitor behavior by parsing logs and provide an adapted response to all attacks. Its products include CrowdSec agent, CrowdSec console, and CrowdSec threat intelligence. The company was founded in 2019 and is based in Montrouge, France.

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