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Tet

Tet Vendor Cyber Rating & Cyber Score

aider.no

Vi lever i en verden drevet av endring. Og nesten daglig setter denne endringstakten nye forventninger – til mennesker, teknologi og tjenester. Vi mener dette er positivt. Denne endringstakten bringer med seg uante muligheter for utvikling, innovasjon og vekst – både for oss og våre omgivelser. Det ligger stort ansvar i å forvalte disse mulighetene riktig. Og vi er lidenskapelig opptatt av å skape verdifulle løsninger. Vi tror at fremtidens bedrifter evner å utfordre, forenkle og samhandle. Vår kjernekompetanse innen regnskap, rådgivning og systemløsninger muliggjør og tilrettelegger for de riktige og gode beslutningene. Vi er Tet. Vi gjør andre gode. Vi skaper trygghet for morgendagens beslutninger. Velkommen til oss! Våren


Tet A.I CyberSecurity Scoring

Tet
Company Information
Website:http://www.aider.no
Employees number:313
Number of followers:515
NAICS:5412
Industry Type:Accounting
Homepage:aider.no
Tet Risk Score (AI oriented)
Between 650 and 699
logo
TetAccounting
Updated:
19/08/2026
666/1000
Weak
B
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Powered by our proprietary A.I cyber incident model
Insurance prefers TPRM score to calculate premium
Tet Global Score (TPRM)
xxxx
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TetAccounting
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Findings

Tet
TetWeak
Current Score
666B (WEAK)
01000
1 incidents
-89 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
SEPTEMBER 2026
667Before Incident
AUGUST 2026
755Before Incident
Breach
07 Aug 2026Tet
Latvia’s Road Traffic Safety Directorate and Tet: Search for accountability begins after massive data breach in Latvia – CSDD chief points to Tet

Latvia’s Road Traffic Safety Directorate Suffers Major Cyberattack Amid Monitoring Failures

666After Incident
CRITICAL-89
TETCSD1787121730
Latvia’s Road Traffic Safety Directorate Suffers Major Cyberattack Amid Monitoring Failures Latvia’s Road Traffic Safety Directorate (CSDD) was hit by a significant cyberattack between August 7 and 8, resulting in the theft of personal data belonging to 1.2 million individuals and records from 200,000 legal entities spanning 18 years of payment transactions. The breach was discovered and contained within hours by CSDD’s own cybersecurity team, not its contracted IT monitoring provider, Tet, which failed to detect the intrusion. CSDD Chairman Aivars Aksenoks revealed that Tet, a telecommunications and technology firm under a five-year contract, was responsible for infrastructure maintenance, firewall protection, and incident monitoring services for which CSDD pays a substantial monthly fee. Despite this, Tet provided no alert during the attack. When CSDD later inquired, Tet confirmed it had not identified the breach. The attack exploited a vulnerability in an internet-accessible CSDD system, according to CERT.LV, Latvia’s cybersecurity incident response team. While no customer phone numbers or email addresses were compromised, the scale of the data exposure has raised concerns about potential misuse. Aksenoks also addressed claims that CSDD had rejected a monitoring agreement with CERT.LV, clarifying that no formal proposal had been submitted through proper administrative channels. Instead, a draft agreement was exchanged informally between a CERT.LV employee and a CSDD specialist who has since left the organization. CSDD has since forwarded the agreement to CERT.LV for signing. Political and Operational Fallout Latvian Prime Minister Andris Kulbergs (Progressive Party) held CSDD’s Management and Supervisory Boards accountable, instructing the Transport Minister Rihards Kozlovskis to assess whether officials should retain their positions. Kozlovskis has launched an accelerated internal investigation, with findings due in early September. The prime minister did not rule out the possibility of the attack being a hybrid operation by a foreign state targeting Latvia’s critical infrastructure. Tet’s Role and Ownership Tet, which provides CSDD’s IT infrastructure, is 51% state-owned through Public Asset Manager Possessor, with the remaining 49% held by Telia Company’s subsidiary, Tilts Communications. Telia is in the process of selling its stakes in Tet and Latvijas Mobilais Telefons (LMT) to Latvenergo, the Latvia State Radio and Television Centre (LVRTC), and a strategic investor, which could result in each party holding ~25% ownership in both companies. In 2025, Tet Group reported €302.85 million in revenue (down 5.8% year-over-year) and a €20.59 million profit (up 14.2%). Tet itself saw €191.67 million in revenue (up 3.4%) and a 49.5% profit increase to €18.38 million. CSDD, a state-owned joint-stock company under the Ministry of Transport, oversees vehicle registration, driver’s license issuance, roadworthiness inspections, and other critical services. The incident underscores vulnerabilities in Latvia’s cybersecurity oversight of public-sector infrastructure.
INCIDENT DETAILS -
TYPE
Data Breach
MOTIVATION
Data TheftPotential hybrid operation by a foreign state
IMPACT
Data Compromised: Personal data of 1.2 million individuals and records from 200,000 legal entitiesSystems Affected: CSDD payment transaction systemsOperational Impact: Disruption of CSDD services, internal investigation launchedBrand Reputation Impact: Significant reputational damage to CSDD and TetIdentity Theft Risk: HighPayment Information Risk: High
DATA BREACH
Personal dataPayment transaction recordsNumber Of Records Exposed: 1.4 million (1.2M individuals + 200K legal entities)Sensitivity Of Data: High (personal and financial data)Data Exfiltration: YesPersonally Identifiable Information: Yes (excluding phone numbers and email addresses)
JULY 2026
755Before Incident
JUNE 2026
755Before Incident
MAY 2026
755Before Incident
APRIL 2026
755Before Incident
MARCH 2026
755Before Incident
FEBRUARY 2026
755Before Incident
JANUARY 2026
755Before Incident
DECEMBER 2025
755Before Incident
NOVEMBER 2025
755Before Incident
OCTOBER 2025
755Before Incident

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