When was Corero founded?

Corero was founded in 1997 and raised its 1st funding round 6 years after it was founded.

Where is Corero located?

Corero is headquartered in Hudson, United States. It is registered at Marlborough, Massachusetts.

Who is the current CEO of Corero?

Lionel Chmilewsky and Lionel Chmilewsky s of Corero.

How many employees does Corero have?

As of Sep 30, 2026, the latest employee count at Corero is 133.

Is Corero a funded company?

Corero is a funded company, having raised a total of $14.5M across 6 funding rounds to date. The company's 1st funding round was a $***** Series B round, raised on Sep 08, 2003.

When was the latest funding round of Corero?

Corero's latest funding was a $***** Post IPO round on Dec 07, 2019, with participation from 1 investor.

Where does Corero rank among its competitors?

Corero ranks 2nd amongst 1521 active competitors, of which 8 are funded. It stands 4th in terms of total funding among its competitors. The most recent competitor to raise funding was Blackwall, which secured $100M in Oct, 2026.

Who are the top competitors of Corero?

Corero's top competitors include NetScout, VeriSign and MazeBolt. Among them, Blackwall secured the most recent funding round in October, 2026.

Corero - 2026 Company Profile, Team, Funding & Competitors

Corero is a public company based in Hudson (United States), founded in 1997. It operates as a Provider of DDoS protection for enterprise. Corero has raised $14.5M in funding. The company has 1521 active competitors, including 8 funded and 14 that have exited. Its top competitors include companies like NetScout, VeriSign and MazeBolt.

Company Details

Provider of DDoS protection for enterprise. It also provides protection for MSSP, hosting providers, and data centers. It provides defense solutions through automatic attack detection and mitigation. The features include network visibility, analytics, and reporting. The products include corero smartWall, a DDoS threat defense system, and network Forensics MSSP.

Website: www.corero.com/
Social
Registered Address: Marlborough, Massachusetts

Key Metrics

Founded Year

1997

Location

Hudson, United States

Stage

Public

Total Funding

$14.5M in 6 rounds

Latest Funding Round

Post IPO, Dec 07, 2019, $*****

Investors

Herald Investment Management & 9 more

Ranked

2^nd among 1521 active competitors

Employee Count

133 as on Sep 30, 2026

Investment & Acquisitions

Top Layer Networks

Similar Companies

NetScout & 1552 more

Exit Details

Public

View Corero's full profile

Corero is associated with 4 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Reports
CORERO NETWORK SECURITY, INC. CIN: 5629669 , United States, Active	Sep 30, 2019	-	-	-
CORERO NETWORK SECURITY PLC CIN: 2662978 , United Kingdom, Active	Nov 13, 1991	$10M - $50M (As on Dec 31, 2025)	-
CORERO NETWORK SECURITY (UK) LIMITED CIN: 4047090 , United Kingdom, Active	Aug 03, 2000	£1M - £10M (As on Dec 31, 2025)	-
CORERO NETWORK SECURITY, INC. CIN: 43346348 , Belgium, Active	Dec 26, 999	-	65 (As on Dec 31, 2022)	-

Corero got listed on Oct 09, 2000.

Click here to take a look at Corero's IPO in detail

Corero has raised a total funding of $14.5M over 6 rounds. Its first funding round was on Sep 08, 2003. Its latest funding round was a Post IPO round on Dec 07, 2019 for $*****. 1 investor participated in its latest round. Corero has 10 institutional investors.

Here is the list of recent funding rounds of Corero:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Dec 07, 2019	8671028	Post IPO	3067927	9310114	3734826	3697717
Oct 15, 2018	8207027	Post IPO	7732384	1888048	3594458	Juniper Networks
Apr 26, 2018	1785585	Conventional Debt	1996530	5908856	7520737	5702114

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View details of Corero's funding rounds and investors

Corero's employee count trend

Corero has 133 employees as of Sep 26. Here is Corero's employee count trend over the years:

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Top competitors of Corero include NetScout, VeriSign and MazeBolt. Here is the list of Top 10 competitors of Corero, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	NetScout 1985, Westford (United States), Public	Provider of network performance, observability, cybersecurity, and DDoS solutions	$6M	Silver Lake, TA Associates & 4 others	69/100
2nd	Corero 1997, Hudson (United States), Public	Provider of DDoS protection for enterprise	$14.5M	Herald Investment Management, Granite Ventures ... & 8 others	66/100
3rd	VeriSign 1995, Mountain View (United States), Public	Attack traffic analysis and management based DDoS protection	-	Western Technology Investment, ValueAct Capital ... & 11 others	65/100
4th	MazeBolt 2013, Ramat Gan (Israel), Series A	Vulnerability Scanning, DDoS analysis	$10M	CerraCap Ventures, EIC Fund & 2 others	61/100
5th	Link11 2005, Frankfurt (Germany), Series B	DDoS protection and CDN solutions provider	$29M	Pride Capital Partners, Conceptum & 1 others	59/100
6th	Reflectiz 2016, Tel Aviv (Israel), Series B	Provider of website security and migration solutions	$28M	12 ANGELS, Capri Ventures & 4 others	59/100
7th	NSFOCUS 2000, Santa Clara (United States), Public	Intelligent hybrid security solutions provider protecting against DDoS and web attacks	-	China Electronics Technology Fund Management	57/100
8th	Neustar 1996, Sterling (United States), Acquired	Cloud based platform offering predictive analytic solutions	-	Foundation Capital, Demtech & 10 others	57/100
9th	Blackwall 2019, Tallinn (Estonia), Series C	Provider of web security and traffic filtering solutions for hosting providers	$163M	Tera Ventures, Dawn Capital & 8 others	55/100
10th	Radware 1997, Mahwah (United States), Public	Cloud based application delivery network management software provider	-	Demtech, Herald Investment Management & 5 others	55/100