RAD Group

RAD Group is an Israeli technology network created by brothers Yehuda Zisapel and Zohar Zisapel. It is not structured as a conventional holding company with one operating parent: its member businesses are independent companies that share a strategic umbrella, common management guidance, selected technologies, entrepreneurial resources, and joint marketing capabilities. The group has operated primarily in telecommunications, computer networking, carrier infrastructure, enterprise connectivity, network monitoring, cybersecurity, and related communications technologies. The group emerged from the Zisapel family's experience in technology distribution. Yehuda Zisapel began working at Motorola Israel in the 1960s and later established businesses that imported and distributed computer-networking equipment. One of those ventures, Bynet, became an Israeli market leader through its distribution relationship with Codex Corporation. When Motorola acquired Codex and later chose not to renew Bynet's distribution agreement, Yehuda concluded that dependence on a single external product line was strategically vulnerable. In 1981, he invited his brother Zohar, an electrical engineer trained at the Technion, to help develop proprietary products inside Bynet's offices. The new development business was named RAD Data Communications, with RAD standing for Research And Development. RAD Data Communications' early success came from a compact modem that could operate without a separate power supply by drawing power from the telephone line. This product helped establish the group's engineering and product-development identity and made RAD Data Communications its largest and best-known operating company. Rather than concentrating on one product category, the founders used the group as a platform for launching specialized technology ventures, often with entrepreneurs from inside or outside the existing businesses and with financing from venture-capital partners. During the 1980s and 1990s, RAD Group expanded through the creation or support of companies focused on Ethernet switching, network access, monitoring, wireless broadband, application delivery, and other communications technologies. LANNET Data Communications was an important early example: RAD supported its formation in 1985, and LANNET developed an Ethernet switch designed to work over ordinary twisted-pair telephone cabling. LANNET later became part of Madge Networks and was subsequently sold to Lucent Technologies. Other ventures, including RADCOM, Radvision, Radware, Ceragon Networks, and Silicom, developed into significant technology businesses; some became publicly traded while others were acquired. The group's model combined decentralization with a shared entrepreneurial ecosystem. Member companies could pursue distinct markets and product strategies while benefiting from access to technical knowledge, management experience, financing relationships, and a pool of executives and founders who had worked across the network. This approach also produced a large number of technology entrepreneurs. Academic research cited in the group's reference material characterized RAD Group as a particularly productive source of Israeli serial entrepreneurs and attributed numerous later high-technology initiatives to former employees and executives. The group has included businesses serving carriers, enterprises, data centers, industrial-control environments, security operators, and wireless-network users. Companies associated with the group have developed access equipment, system integration services, high-end server and security adapters, network-performance monitoring, wireless broadband, optical transport, application delivery, industrial cybersecurity, and distributed-denial-of-service mitigation. Four member companies identified in the reference material have traded on NASDAQ: Ceragon Networks, Radware, RADCOM, and Silicom. Other members have remained privately held or have exited the group throu…

RAD Group developed from the technology-distribution activities of Yehuda Zisapel. After beginning his career at Motorola Israel, Yehuda established a computer-networking equipment import and distribution business in 1973 and later founded Bynet. Bynet became a leading Israeli distributor of Codex Corporation products. Motorola acquired Codex in 1977, but Bynet retained distribution rights for several years. When Motorola ended the arrangement in 1981 and Codex began selling directly in Israel, Yehuda reassessed the risks of relying on a single supplier. That year, Yehuda brought his brother Zohar Zisapel into Bynet to develop proprietary products. Zohar, like Yehuda, had studied electrical engineering at the Technion–Israel Institute of Technology. The brothers established RAD Data Communications in a small area of the Bynet offices. The name RAD was derived from Research And Development. Its first notable product was a compact modem that used electrical power carried over the telephone line, avoiding the need for a separate power supply. The product helped demonstrate the commercial value of designing specialized communications hardware rather than merely distributing equipment. RAD Data Communications became the foundation of a broader group-building model. The Zisapels and their associates supported entrepreneurs and management teams in creating independent companies around specific opportunities in networking and telecommunications. Funding could come from RAD and external venture-capital firms. The companies were not simply divisions of one operating corporation; instead, they retained operational independence while sharing elements of technology, management, strategy, and marketing. One important early venture was LANNET Data Communications, supported by RAD in 1985. LANNET developed an Ethernet switch that carried network traffic over standard twisted-pair telephone wiring, an approach intended to reduce dependence on more expensive coaxial cabling. LANNET completed an initial public offering on NASDAQ in 1991. As the networking sector consolidated, it merged with Madge Networks in 1995. The combined organization later had approximately 1,400 employees and reported more than $400 million in revenue, according to the cited reference material. Strategic disagreements followed during 1996 and 1997. Madge eventually separated the Ethernet business into a LANNET subsidiary and sold it to Lucent Technologies in July 1998. The 1990s were a major expansion period for RAD Group. The network helped establish or finance a series of businesses in network monitoring, video communications, application delivery, wireless communications, switching, and other fields. RADCOM was established in 1990 with support from Star Venture and Pitango Venture Capital. Radvision followed in 1992, founded by Ami Amir and Eli Doron with external financing from Evergreen and Clal. Other businesses established or associated with the group included Radware, Ceragon Networks, Radwin, Silicom, and several companies that were later sold to larger technology firms. The group’s venture-creation approach gave it influence beyond the individual products sold by its member companies. Research cited by the RAD Group reference describes former group members as a substantial source of Israeli technology entrepreneurs, including serial founders who went on to create multiple start-ups. This entrepreneurial circulation became part of the group’s reputation and helped extend its impact across Israel’s high-technology ecosystem. By the 2000s and 2010s, the portfolio included optical transport, data-center interconnect, industrial-control cybersecurity, and distributed-denial-of-service protection in addition to traditional access and networking products. Named companies included PacketLight Networks, founded in 2000; Radiflow, founded in 2009; and SecurityDAM, founded in 2012. Several members remained private, while Ceragon Networks, Radware, RADCOM, and Silicom were identified as NASDAQ-traded companies in the reference material. The group has also experienced portfolio turnover. Former members listed in the reference include LANNET, RADLINX, Armon Networking, RADNET, RADLAN, RND, RiT Technologies, SANRAD, Radvision, and RadView Software. Their exits involved sales to companies such as Lucent Technologies, VocalTec, Bay Networks, Siemens, Newbridge Networks, Marvell, USR Electronics, Stis Coman, OCZ Technology, and Avaya. These transactions illustrate the group's recurring pattern of incubating or supporting specialized businesses that could later become independent public companies or acquisition targets. The available material identifies Yehuda Zisapel and Zohar Zisapel as the group's founders and collective strategic leaders. It does not establish a single current chief executive, a consolidated parent corporation, or a current official website. RAD Group is best understood as an enduring network of independently operated Israeli communications-technology companies rather than as a conventional unified product manufacturer.

• 2012

  SecurityDAM is established

  [1]RAD Groupen.wikipedia.org

  SecurityDAM is founded to develop detection and mitigation technologies for distributed-denial-of-service attacks.

• 2009

  Radiflow is established

  [1]RAD Groupen.wikipedia.org

  Radiflow is founded to provide cybersecurity solutions for industrial-control and SCADA environments.

• 2000

  PacketLight Networks is established

  [1]RAD Groupen.wikipedia.org

  PacketLight Networks is founded to develop optical transport and data-center interconnect solutions.

• 1998

  LANNET is sold to Lucent Technologies

  [1]RAD Groupen.wikipedia.org

  Lucent Technologies acquires the Ethernet division that Madge had separated under the LANNET name.

• 1995

  LANNET merges with Madge Networks

  [1]RAD Groupen.wikipedia.org

  LANNET becomes part of Madge Networks as the networking market consolidates.

• 1992

  Radvision is founded

  [1]RAD Groupen.wikipedia.org

  Ami Amir and Eli Doron establish Radvision with support from external venture-capital investors.

• 1991

  LANNET lists on NASDAQ

  [1]RAD Groupen.wikipedia.org

  LANNET completes an initial public offering on NASDAQ.

• 1990

  RADCOM is established

  [1]RAD Groupen.wikipedia.org

  RADCOM is created to develop monitoring, analysis, and troubleshooting systems for telecommunications networks.

• 1985

  LANNET receives RAD support

  [1]RAD Groupen.wikipedia.org

  RAD provides initial funding and support for LANNET Data Communications.

• 1981

  RAD Data Communications is founded

  [1]RAD Groupen.wikipedia.org

  Yehuda and Zohar Zisapel begin developing proprietary communications products inside Bynet and establish RAD Data Communications.

• 1973

  Bynet is established

  [1]RAD Groupen.wikipedia.org

  Yehuda Zisapel establishes Bynet as a distributor of computer-networking equipment in Israel.

An Israeli communications-technology venture network that combines independent specialist companies with shared strategic guidance, engineering capabilities, entrepreneurial expertise, and market access.

• Network access and telecommunications equipment · 1981

  RAD Data Communications

  RAD Data Communications is the foundational and largest company associated with RAD Group. It develops access solutions for telecommunications carriers and corporate networks, continuing the group's original focus on specialized communications hardware. Its early commercial success came from a compact modem that drew power through the telephone line rather than requiring a separate power supply. The business represents RAD's engineering-led approach to carrier and enterprise connectivity.

• System integration · 1973

  Bynet

  Bynet began as Yehuda Zisapel's networking-equipment distribution business and became a significant Israeli technology integrator. It is associated with the origins of RAD Group and with the transition from distributing third-party equipment to developing proprietary communications products. Its role is primarily systems integration and technology delivery rather than a single branded hardware line.

• Server and security connectivity adapters · 1987

  Silicom Connectivity Solutions

  Silicom develops high-end connectivity adapters for servers, network appliances, and security systems. Within the RAD ecosystem, it represents the hardware-component and platform-enablement segment, supplying specialized connectivity products for data-processing and network-security applications. Silicom is identified in the reference material as one of the RAD-associated companies traded on NASDAQ.

• Network monitoring and analytics · 1990

  RADCOM

  RADCOM provides monitoring, analysis, and troubleshooting systems for next-generation telecommunications networks. Its products are intended to help operators understand network performance, identify faults, and improve service quality across increasingly complex infrastructures. RADCOM was established in 1990 and is identified as a NASDAQ-traded RAD-associated company.

• Wireless broadband · 1996

  Ceragon Networks

  Ceragon Networks develops wireless broadband systems used to connect communications networks where wired infrastructure is unavailable, uneconomic, or insufficiently flexible. It is part of the group's carrier-infrastructure portfolio and is identified in the reference material as a NASDAQ-traded company. The business was established in 1996 under the name Giganet.

• Application delivery and cybersecurity · 1997

  Radware

  Radware develops intelligent application-switching, application-delivery, and cybersecurity technologies for enterprise and service-provider environments. Its position within the RAD ecosystem reflects the movement from basic network connectivity toward traffic management, application availability, and protection against network-based threats. Radware is identified as a NASDAQ-traded RAD-associated company.

• Wireless broadband solutions · 1997

  Radwin

  Radwin develops broadband wireless solutions for connectivity applications. It extends the group’s focus on carrier and enterprise access by using wireless links in situations where conventional wired deployment may be difficult or costly. The reference material lists Radwin among the companies associated with the RAD Group and dates its establishment to 1997.

• Optical transport and data-center interconnect · 2000

  PacketLight Networks

  PacketLight Networks develops DWDM and OTN solutions for fiber-optic networks and data-center interconnection. Its systems are designed to transport high-rate data, storage, video, and voice traffic, with optional Layer 1 encryption. The company represents RAD Group’s focus on high-capacity optical infrastructure for carriers, enterprises, and data-center operators.

• Industrial cybersecurity · 2009

  Radiflow

  Radiflow provides cybersecurity technologies for industrial-control systems and SCADA environments. Its focus is protecting operational technology networks, where security controls must account for industrial processes, legacy systems, and availability requirements. Radiflow broadened the RAD-associated portfolio beyond conventional telecommunications and enterprise networking into critical-infrastructure security.

• DDoS detection and mitigation · 2012

  SecurityDAM

  SecurityDAM develops systems for detecting and mitigating distributed-denial-of-service attacks. The business addresses availability and network-protection risks affecting service providers and other organizations exposed to volumetric or coordinated attacks. It is listed in the reference material as a RAD Group company established in 2012.

• 1998

  Sale of LANNET's Ethernet division to LucentM&A

  Background

  After disagreements over strategy, Madge Networks spun off its Ethernet division under the LANNET name.

  Action taken

  The re-established LANNET business was sold to Lucent Technologies.

  Aftermath

  The transaction removed LANNET from the RAD Group's portfolio and illustrated the group's model of developing businesses that could later be acquired.

  Source

• 1995

  LANNET merger with Madge NetworksM&A

  Background

  The networking market was consolidating and LANNET was operating as a public technology company.

  Action taken

  LANNET merged with Madge Networks.

  Aftermath

  The combined company grew substantially, but strategic disagreements later contributed to the separation and sale of the Ethernet business.

  Source

• 1985

  Support for an independent Ethernet ventureStrategy

  Background

  RAD sought to expand its technology footprint by supporting entrepreneurs pursuing specialized networking opportunities.

  Action taken

  RAD provided initial funding and support for Benny Hanigal to establish LANNET Data Communications.

  Aftermath

  LANNET developed an early Ethernet-switching product, later became part of Madge Networks, and was ultimately sold to Lucent Technologies.

  Source

• 1981

  Shift from distribution toward proprietary product developmentStrategy

  Background

  The loss of Bynet's distribution relationship with Motorola and Codex exposed the risks of relying on a single external product line.

  Action taken

  Yehuda Zisapel brought Zohar Zisapel into Bynet to establish an internal product-development effort, which became RAD Data Communications.

  Aftermath

  The decision created the engineering and venture-building foundation for RAD Group.

  Source

1. 1RAD Groupen.wikipedia.org