Incident Score: Analysis & Impact (TES1790094610)

In this Rankiteo incident briefing, we review the Tessco LLC breach identified under incident ID TES1790094610.

The analysis begins with a detailed overview of Tessco LLC's information like the linkedin page: https://www.linkedin.com/company/tessco-technologies, the number of followers: 16366, the industry type: Telecommunications and the number of employees: 743 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 608 and after the incident was 541 with a difference of -67 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Tessco LLC and their customers.

On 16 September 2026, Tessco LLC disclosed Data Breach issues under the banner "Tessco LLC Reports Data Breach Exposing Minors’ Personal Information".

Tessco LLC, a Maryland-based distributor specializing in wireless infrastructure solutions, has disclosed a data breach involving the personal information of minors.

The disruption is felt across the environment, and exposing Social Security numbers, financial account information.

In response, and began remediation that includes 24 months of complimentary identity monitoring and restoration services, and stakeholders are being briefed through Notification letters to affected individuals, customer care line, mail support.

The case underscores how with advisories going out to stakeholders covering Parents and guardians can enroll their children by using a unique activation code from their notification letter before December 31, 2026. Support is available via Experian’s customer care line (1-833-918-9283) or by mail at Tessco’s Hunt Valley address.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.