AT&T Cybersecurity
AT&T Cybersecurity's Overview
AT&T Cybersecurity provides a portfolio of intelligence-driven cybersecurity solutions and services to help businesses of all sizes manage risk and build cyber resilience. Leveraging AT&T's vast network infrastructure and threat visibility, they offer capabilities in threat detection and response, network security, endpoint security, SASE (Secure Access Service Edge), and security consulting. Their focus is on integrating security into the fabric of business operations, enabling organizations to innovate confidently while protecting their critical assets from sophisticated cyberattacks. AT&T Cybersecurity aims to simplify complex security challenges, offering expert guidance and advanced technologies to defend against the ever-evolving threat landscape, particularly for enterprise clients requiring integrated security with their network services.
Where is AT&T Cybersecurity's Headquarters?
HQ Function
Serves as the central corporate headquarters for AT&T Inc., directing global strategy, operations, and administrative functions for all divisions, including the AT&T Cybersecurity portfolio of services and solutions.
Notable Features:
The AT&T Discovery District®, an urban campus featuring green spaces, retail, restaurants, and a large media wall, designed to foster community and innovation. The Whitacre Tower is a prominent skyscraper in downtown Dallas.
Work Culture:
AT&T fosters a culture of innovation, customer-first approach, and diversity. The cybersecurity efforts emphasize proactive defense, continuous learning to combat evolving threats, and collaboration across teams to deliver integrated security solutions within the broader AT&T Business offerings.
HQ Significance:
The Dallas headquarters is pivotal for AT&T's strategic decision-making, resource allocation, and oversight of its extensive telecommunications network and diverse business units, including the critical cybersecurity offerings that protect AT&T's infrastructure and its customers.
Values Reflected in HQ: The headquarters and the Discovery District aim to reflect AT&T's commitment to innovation, community engagement, connectivity, and future-forward thinking, integral to its cybersecurity mission.
Location:
AT&T Cybersecurity leverages AT&T's global network and infrastructure to deliver security solutions and support to multinational corporations and businesses worldwide. This includes leveraging global network operation centers for threat visibility, as well as sales and support teams in numerous countries across North America, Europe, Asia-Pacific, and Latin America. While some Security Operations Center (SOC) operations were part of the divestiture to LevelBlue, AT&T continues to provide global service delivery for its integrated cybersecurity solutions, tailored to regional compliance and threat landscapes, ensuring global organizations can maintain a strong security posture wherever they operate.
Street Address:
208 S. Akard St.
City:
Dallas
State/Province:
Texas
Country:
USA
AT&T Cybersecurity's Global Presence
Bedminster, New Jersey, USA
Address: One AT&T Way, Bedminster, NJ 07921, USA
Key East Coast center for AT&T, supporting enterprise clients, network infrastructure management, and cybersecurity service delivery for the region.
Plano, Texas, USA
Address: AT&T has multiple facilities in Plano, e.g., 2900 W Plano Pkwy, Plano, TX 75075. Note: Some former AT&T Cybersecurity MSSP operations, previously at locations like 601 Data Drive, are now part of LevelBlue.
Supports cybersecurity product development, sales, and operations for AT&T's retained portfolio, leveraging the rich tech talent pool in the North Texas region.
San Mateo, California, USA / Bay Area
Address: AT&T maintains a presence in the Bay Area, leveraging the tech ecosystem. Specific addresses for cybersecurity teams are integrated within larger AT&T facilities rather than a standalone 'AT&T Cybersecurity' office post-AlienVault integration and subsequent restructuring.
Focus on cybersecurity research, development, and engagement with the West Coast technology sector and enterprise clients.
Buying Intent Signals for AT&T Cybersecurity
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Executive Team of AT&T Cybersecurity
As of April 2025, AT&T Cybersecurity' leadership includes:
Investors of AT&T Cybersecurity
AT&T Cybersecurity has been backed by several prominent investors over the years, including:
Executive New Hires/Exits in the Last 12 Months
The most significant recent change impacting AT&T Cybersecurity's executive landscape was the divestiture of its Managed Security Services Provider (MSSP) business to WillJam Ventures, creating the standalone company LevelBlue, effective February 2024. This involved the transition of some executives previously associated with AT&T Cybersecurity's MSSP operations to leadership roles at LevelBlue. AT&T continues to have dedicated leadership for its retained cybersecurity portfolio.
Departures
Technology (Tech Stack) used by AT&T Cybersecurity
Discover the tools AT&T Cybersecurity uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
AT&T Cybersecurity Email Formats and Examples
AT&T, being a large corporation, primarily uses standardized email formats for its employees. The most common formats are typically a combination of first initial and last name, or first name and last name separated by a period.
[first_initial][last]@att.com (e.g., jsmith@att.com) or [first].[last]@att.com (e.g., jane.doe@att.com)
Format
jsmith@att.com
Example
85%
Success rate
News and media
CRN • February 1, 2024
AT&T Sells Standalone Cybersecurity Unit To Create LevelBlue
AT&T divested its standalone managed security services provider (MSSP) business, formerly part of AT&T Cybersecurity, to private equity firm WillJam Ventures. The divested unit has been rebranded as LevelBlue, a standalone company focused on MSSP offerings, with Bob McCullen as its CEO. AT&T retains its internal security capabilities and continues to offer integrated cybersecurity solutions for its enterprise and business customers as part of its broader portfolio....more
AT&T Newsroom • October 25, 2023
AT&T Cybersecurity Insights Report: Cybercriminals are Targeting Your Weakest Link – Human Error
AT&T released its 15th Cybersecurity Insights Report, highlighting that human error remains a significant factor in security breaches. The report emphasizes the importance of robust security awareness training, strong identity and access management, and a defense-in-depth strategy to mitigate risks associated with the human element in cybersecurity....more
AT&T Newsroom (via PR Newswire) • July 26, 2023
AT&T Recognized as a Leader in IDC MarketScape: U.S. Managed SD-WAN Services 2023 Report
AT&T was named a Leader in the IDC MarketScape for U.S. Managed SD-WAN Services. This recognition highlights AT&T's strong capabilities in providing secure, managed SD-WAN solutions, which are a critical component of modern network security and SASE architectures often delivered through AT&T's cybersecurity portfolio....more
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