CYREN
Corporate brand
UnclaimedCYREN was a cloud-based Internet security and threat-intelligence company that ceased operations in February 2023.
Last updated August 31, 2026
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Overview
CYREN was a cybersecurity technology company whose roots reached back to Commtouch, an Israeli business incorporated in 1991 by Gideon Mantel. The company initially developed Internet communications and security technologies and later evolved toward cloud-delivered protection for businesses, telecommunications providers, original equipment manufacturers, and other technology partners. Its activities centered on detecting and blocking threats at the network, messaging, web, and endpoint layers rather than selling primarily through a conventional consumer-security retail model. The company became publicly traded in 1999. During its development, it received venture investment from Gemini Israel Ventures and attracted investment associated with Microsoft co-founder Bill Gates and Microsoft co-founder Paul Allen. In the following years, Commtouch expanded its security capabilities through acquisitions. It acquired Authentium's Command Antivirus division in 2010, purchased the antivirus business of FRISK Software International in 2012, and completed the acquisition of Eleven GmbH later in 2012. These transactions strengthened its antivirus, anti-spam, email-security, and private-label cloud-security offerings, particularly for service providers and OEM customers. Shareholders approved changing the corporate name from Commtouch to Cyren Ltd. in January 2014. Under the CYREN identity, the business presented itself as a provider of cloud security services and threat intelligence. Its portfolio included web and DNS security, URL filtering, phishing and malware detection, ransomware protection, anti-spam services, botnet-attack prevention, and related threat-analysis capabilities. It also offered endpoint protection for mobile devices and security functions intended for Internet of Things gateways. The company supplied technologies to enterprise and channel customers and counted organizations such as Microsoft, Google, Check Point, Dell, T-Mobile, and Intel among its reported major clients. At its peak, CYREN employed approximately 220 people and maintained operations or offices in McLean, Virginia; Herzliya, Israel; Berlin, Germany; Bracknell, United Kingdom; and Reykjavík, Iceland. Its international footprint reflected a business model combining Israeli security research and engineering with North American corporate operations and relationships with global technology and telecommunications companies. The company experienced severe financial and operational pressure in early 2023. In February, it announced a plan to eliminate approximately 121 positions, representing substantially all of its workforce, citing market conditions and difficulties raising additional capital. On February 22, 2023, CYREN announced that it had ceased operations and begun insolvency proceedings aimed at liquidating subsidiaries. Its Nasdaq shares were delisted on March 3, 2023. In December 2023, Data443 Risk Mitigation completed the acquisition of certain CYREN assets, including threat-intelligence, URL-categorization, and email-security technologies. CYREN therefore remains primarily a defunct cybersecurity company and technology portfolio, with selected assets continuing under a later acquirer rather than as an operating standalone brand.
History
CYREN originated as Commtouch, an Israeli company incorporated on February 10, 1991, by Gideon Mantel. The early business developed in an Israeli technology and security environment and received investment from Gemini Israel Ventures, a fund associated with Israel's Yozma-era venture-capital ecosystem. During the 1990s, the company expanded its commercial profile. Isabel Maxwell became president in 1997, and the company later attracted investment from Microsoft co-founder Bill Gates and Microsoft co-founder Paul Allen. Commtouch went public in 1999. The company's later history was shaped by a move toward integrated, cloud-based security services and by acquisitions that broadened its technology base. In September 2010, it acquired the Command Antivirus division of Authentium. In October 2012, it completed the acquisition of the antivirus business of FRISK Software International. In November 2012, it completed the acquisition of Eleven GmbH, a transaction that strengthened its ability to provide private-label cloud security services to OEMs and service providers. These deals expanded the company's capabilities across antivirus, email security, anti-spam, and related Internet-threat defenses. In January 2014, shareholders approved changing the corporate name from Commtouch to Cyren Ltd. The CYREN brand was subsequently associated with cloud security and threat intelligence delivered to businesses and technology partners. Its service range covered web and DNS security, URL categorization and filtering, phishing and malware detection, ransomware protection, anti-spam, botnet prevention, and endpoint protection for mobile devices and IoT gateways. The company operated internationally, with headquarters in McLean, Virginia, and offices in Herzliya, Berlin, Bracknell, and Reykjavík. Reported customers and technology partners included major companies such as Microsoft, Google, Check Point, Dell, T-Mobile, and Intel. CYREN was listed on Nasdaq under the symbol CYRN. In January 2019, it announced a voluntary delisting from the Tel Aviv Stock Exchange. The company nevertheless continued to face the challenges of operating as a specialized cybersecurity provider in a competitive market dominated by larger security vendors and platform companies. The business entered its final phase in early 2023. In mid-January, Jeffrey Dauer was appointed chief financial officer and chief accounting officer. On February 1, CYREN announced a workforce reduction of approximately 121 employees, described as substantially all of its workforce, and attributed the decision to market conditions and difficulties securing additional capital. On February 22, the company announced that it had ceased operations and started insolvency proceedings to liquidate its subsidiaries. Nasdaq delisted its shares on March 3, 2023. In December of that year, Data443 Risk Mitigation acquired selected CYREN assets, particularly technologies related to threat intelligence, URL categorization, and email security. The corporate operating company is defunct, although portions of its technology portfolio entered another company's asset base.
- 2023
Operations cease
[1]CYREN reduced its workforce, ceased operations, and entered insolvency proceedings.
- 2023
Selected assets acquired by Data443
[1]Data443 Risk Mitigation acquired selected CYREN threat-intelligence, URL-categorization, and email-security assets.
- 2019
Tel Aviv Stock Exchange delisting announced
[1]CYREN announced that it would voluntarily delist its shares from the Tel Aviv Stock Exchange.
- 2014
Corporate name changes to Cyren
[1]Shareholders approved changing the corporate name from Commtouch to Cyren Ltd.
- 2012
FRISK and Eleven acquisitions
[1]The company acquired the antivirus business of FRISK Software International and completed the acquisition of Eleven GmbH.
- 2010
Command Antivirus acquisition
[1]Commtouch acquired Authentium's Command Antivirus division.
- 1999
Commtouch goes public
[1]Commtouch became a publicly traded company.
- 1997
Isabel Maxwell becomes president
[1]Isabel Maxwell took the presidency of Commtouch during its early growth period.
- 1991
Commtouch incorporated in Israel
[1]Gideon Mantel incorporated Commtouch as a private Israeli company.
Products and positioning
A cloud-delivered cybersecurity and threat-intelligence provider for enterprises, telecommunications companies, OEMs, and service providers, with emphasis on network, web, DNS, email, and endpoint threat detection.
Cloud security
CYREN Cloud Security
A portfolio of cloud-delivered security services designed to identify and block threats across web traffic, DNS requests, email, and related Internet channels. CYREN positioned these capabilities for enterprises, telecommunications providers, OEMs, and service providers that needed security functions embedded in their own offerings or delivered through managed services.
Threat intelligence
CYREN Threat Intelligence
Threat-intelligence capabilities used to identify malicious infrastructure, suspicious online activity, malware, phishing, and other harmful content. The technology supported security decisions such as blocking access, categorizing URLs, and improving protection in email and network-security workflows.
Email security and anti-spam
CYREN Email Security
Email-focused protection covering anti-spam and detection of malicious or deceptive messages. It formed part of CYREN's broader private-label and cloud-security capabilities for service providers and organizations seeking to filter threats before they reached users.
Web and DNS security
CYREN Web and DNS Security
Web and DNS controls that used URL filtering, categorization, and threat detection to prevent access to malicious, phishing, ransomware, or otherwise unsuitable destinations. These functions were intended for enterprise networks and channel partners delivering managed or embedded security services.
Antivirus · 2010
Command Antivirus
An antivirus business acquired from Authentium in 2010. The acquisition added established malware-protection technology to Commtouch's wider Internet-security portfolio and contributed to the company's later cloud-based security proposition.
Brand decisions
2023
Workforce reduction and wind-downStrategyBackground
CYREN cited difficult market conditions and challenges in raising additional capital.
Action taken
The company approved a reduction of approximately 121 employees, representing substantially all of its workforce, then announced that it had ceased operations and begun insolvency proceedings.
Aftermath
CYREN's operating business was wound down, its Nasdaq shares were delisted, and selected technologies were later sold to Data443 Risk Mitigation.
2023
Sale of selected technology assets to Data443M&ABackground
Following the cessation of CYREN's operations and insolvency proceedings, selected intellectual property and technology assets remained available for acquisition.
Action taken
Data443 Risk Mitigation acquired certain CYREN assets, including threat intelligence, URL categorization, and email-security technologies.
Aftermath
Parts of CYREN's technology portfolio continued under Data443, but CYREN did not resume operations as an independent company.
2014
Adoption of the CYREN corporate identityStrategyBackground
The company had expanded beyond its earlier Commtouch identity through acquisitions and a broader cloud-security portfolio.
Action taken
Shareholders approved changing the corporate name from Commtouch to Cyren Ltd.
Aftermath
The CYREN name became the principal identity for the company's cloud security and threat-intelligence business.
Recent events
Cyren Inbox Security joins the Cortex XSOAR Marketplace[2]
Cyren announced that its Inbox Security pack was available on the Palo Alto Networks Cortex XSOAR Marketplace, enabling customers to use the pack for email threat detection, investigation, and remediation.
Cyren announces URL Lookup API and free Community Edition[3]
Cyren announced an expansion of its Threat Intelligence Services product line with a cloud-based interface to its web categorization engine, including a free Community Edition.
Reported
Cyren joins Palo Alto Networks Cortex XSOAR Marketplace[4]
Cyren announced that it had joined the Palo Alto Networks Cortex XSOAR Marketplace as a partner, providing automated threat intelligence content packs.
Reported
Cyren announces $10.25 million private placement[5]
Cyren announced a private placement with a select group of accredited investors for $10.25 million in aggregate principal amount of convertible debentures.
Reported
Cyren launches Inbox Security[5]
Cyren announced the launch of Cyren Inbox Security, a cloud-based email security product for enterprise customers. The service integrates with Microsoft 365 and combines email monitoring and threat detection with automated response and remediation.
Reported
Cyren launches Inbox Security[6]
Cyren launched Cyren Inbox Security, a cloud-based email security product for enterprise customers. The service integrates with Microsoft 365 and combines continuous email monitoring and threat detection with automated response and remediation.
Reported
Cyren reports third-quarter 2019 financial results[7]
Cyren announced its third-quarter 2019 results, reporting revenue of $9.5 million and a GAAP net loss of $3.5 million for the quarter.
Reported
Cyren closes rights offering[7]
Cyren closed its rights offering on November 6, 2019, issuing 4,635,584 ordinary shares at $1.73 per share and generating approximately $8 million in gross proceeds.
Sources14 sources
- 1CYRENen.wikipedia.org
- 2Cyren Inbox Security加入Cortex XSOAR Marketplacebaltimorestar.com
- 3Cyren宣布推出URL Lookup API及免费社群版newjerseytelegraph.com
- 4Cyren 加入 Palo Alto Networks Cortex XSOAR Marketplacefinance.yahoo.com
- 5Cyren宣布1,025万美元私募融资finance.yahoo.com
- 6Cyren推出Inbox Securityfinanznachrichten.de
- 7Cyren公布2019年第三季度财务业绩finanznachrichten.de
- 8Cyren Announces $12 Million Private Placement Priced At-the-Marketbignewsnetwork.com
- 9Cyren Announces Fourth Quarter and Full Year 2020 Financial Resultsfinance.yahoo.com
- 10Cyren Ltd: Cyren Announces $10.2 Million Private Placement Priced at a Premium to Marketfinanznachrichten.de
- 11Cyren Ltd: Cyren Announces Closing of $12 Million Private Placement Priced At-the-Marketfinanznachrichten.de
- 12Cyren Ltd: Cyren Launches Threat InDepth to Help Enterprises Intelligently Tackle New Email-Borne Security Threatsfinanznachrichten.de
- 13Cyren Ltd: Cyren Reports Second Quarter 2020 Financial Resultsfinanznachrichten.de
- 14Cyren Reports Second Quarter 2020 Financial Resultsfinance.yahoo.com
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