What is the official website of Tesco ?

The official website of Tesco is http://www.tescoplc.com.

What is Tesco's cybersecurity risk score?

Tesco has an AI-generated cybersecurity risk score of 745 out of 1000, indicating a Moderate security posture according to Rankiteo's assessment.

How many security incidents has Tesco experienced?

According to Rankiteo, Tesco currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.

Has Tesco been affected by any supply chain cyber incidents ?

According to Rankiteo, Tesco has been affected by multiple supply chain cyber incidents. The affected supply chain sources and their corresponding incident IDs are: Peter Green Chilled (Incident ID: MARCALWAISAITOYTHEMORPET-TE1772023906) Peter Green Chilled (Incident ID: PETBLATOT-TE1770804130)

Does Tesco have SOC 2 Type 1 certification ?

According to Rankiteo, Tesco is not certified under SOC 2 Type 1.

Does Tesco have SOC 2 Type 2 certification ?

According to Rankiteo, Tesco does not hold a SOC 2 Type 2 certification.

Does Tesco comply with GDPR ?

According to Rankiteo, Tesco is not listed as GDPR compliant.

Does Tesco have PCI DSS certification ?

According to Rankiteo, Tesco does not currently maintain PCI DSS compliance.

Does Tesco comply with HIPAA ?

According to Rankiteo, Tesco is not compliant with HIPAA regulations.

Does Tesco have ISO 27001 certification ?

According to Rankiteo,Tesco is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.

Which industry does Tesco operate in ?

Tesco operates primarily in the Retail industry.

How many employees does Tesco have ?

Tesco employs approximately 86,468 people worldwide.

Does Tesco own any subsidiaries ?

Tesco presently has no subsidiaries across any sectors.

How many LinkedIn followers does Tesco have ?

Tesco's official LinkedIn profile has approximately 898,592 followers.

What is the NAICS classification code for Tesco ?

Tesco is classified under the NAICS code 43, which corresponds to Retail Trade.

Does Tesco have a Crunchbase profile ?

Yes, Tesco has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/tesco.

Does Tesco have a LinkedIn profile ?

Yes, Tesco maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/-tesco.

How many cybersecurity incidents has Tesco experienced ?

As of August 2, 2026, Rankiteo reports that Tesco has experienced 9 cybersecurity incidents.

How many peer or competitor companies does Tesco have ?

Tesco has an estimated 15,934 peer or competitor companies worldwide.

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Tesco

Boost Score +25 with badge (5 left)

745

/1000

Moderate

770

/1000

Fair

Tesco Vendor Cyber Rating & Cyber Score

tescoplc.com

cb in

Add Your Compliance Badge

One of the world’s largest retailers of consumer goods from food to fashion. Serving our customers, communities and planet a little better every day in our stores and online is at the heart of everything we do. Founded in 1919 by Jack Cohen using the £30 he received on leaving the Royal Flying Corp, we’ve come a long way from his small market stall in East London. Today over 400,000 colleagues work across our stores, office, distribution and customer engagement centres in the UK, Europe and Asia. Share our passion for the people, products and places that make us great, and we can offer the right support to develop your skills. If you’re looking for the perfect work-life balance, a collaborative culture and flexible ways of working,

Tesco A.I CyberSecurity Scoring

Scoring History

Tesco

Tesco CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

Tesco

Vulnerability

3/2026

AST-TESHE177367...

Tesco

Breach

100

9/2025

TES502090325

Tesco

Cyber Attack

5/2025

Peter Green Chi...

MARCALWAISAITOY...

Tesco

Cyber Attack

100

5/2025

Peter Green Chi...

PETBLATOT-TE177...

Tesco

Cyber Attack

10/2021

TES18811222

Tesco

Breach

100

6/2021

-TE442014409192...

Tesco

Data Leak

3/2020

TES14324423

Tesco

Data Leak

03/2018

TES20379622

Tesco

Data Leak

02/2014

TES122441222

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A.I.

Tesco Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Actual

Prediction

Incident Predictions locked

Access Monitoring Plan

A.I Risk Score Likelihood 3 - 6 - 9 months

Actual

Prediction A

Prediction B

Prediction C

Prediction D

A.I. Risk Score Predictions locked

Access Monitoring Plan

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Underwriter Stats for Tesco

Incidents vs Retail Industry Avg (This Year)

Tesco has 46.24% fewer incidents than the average of same-industry companies with at least one recorded incident.

Incidents vs All-Companies Average (This Year)

Tesco has 2.91% fewer incidents than the average of all companies with at least one recorded incident.

Incident Types Tesco vs Retail Industry Avg (This Year)

Tesco reported 1 incidents this year: 0 cyber attacks, 0 ransomware, 1 vulnerabilities, 0 data breaches, compared to industry peers with at least 1 incident.

Incident History - Tesco (X = Date, Y = Severity)

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SUBSIDIARY

Tesco Subsidiaries

Tesco

Retail

Website: http://www.tescoplc.com

Company Size: 10,001+ employees

Tesco BengaluruRetail

Tesco SourcingRetail

BookerWholesale

Booker CateringWholesale

LondisRetail

PremierRetail

ChefCentralWholesale

F&F ClothingRetail Apparel and Fashion

Tesco Stores CR, a.s.Retail

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Mais do que varejo, somos um ecossistema que conecta produtos, serviços, crédito e logística com dedicação total! Estamos presentes na mente, no coração e na casa de milhões de brasileiros, com um portfólio de marcas que há décadas faz parte da vida das pessoas: Casas Bahia, Ponto Frio, Extra.com.br, BanQi, Bartira e CB Full. Aqui, o cliente está no centro de tudo. E é por isso que inovamos todos os dias para oferecer a melhor experiência em produtos, serviços financeiros, tecnologia e logística. Estamos em todas as regiões do Brasil, com mais de 1.000 lojas físicas, dezenas de centros de distribuição e somos uma das maiores e mais digitais redes logísticas do país. Contamos com a maior fábrica de móveis da América Latina, um banco digital que leva crédito a quem mais precisa e a nossa mega plataforma logística que conecta marcas e clientes. Além disso, o Grupo Casas Bahia tem capital aberto na B3 desde 2013, com um compromisso sólido com o mercado e com a nossa história. Porque aqui, a dedicação é o que nos move. Acreditamos no poder da transformação, da inclusão e da inovação para fazer a diferença na vida de cada cliente, colaborador e parceiro. Somos feitos de dedicação total. Nós somos o Grupo Casas Bahia! 🚀💙❤️ Para falar conosco, entre em contato através de mensagem via perfil oficial no Instagram - Grupo Casas Bahia

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NEWS

Tesco CyberSecurity News

Global CVEs (Not Company-Specific)

CVE-2026-18556

SUMMARY

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 8.2

Complexity: HIGH

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

https://uptime.n-able.com/

CVE-2026-55735

SUMMARY

Improper Verification of Cryptographic Signature in ueberauth guardian allows an unauthenticated attacker to revoke a victim's session with a forged token. Guardian.revoke/3 in lib/guardian.ex decodes the supplied token with peek/1, which performs no signature verification (it only base64-decodes the JWT header and payload). The resulting unverified claims are forwarded directly to the configured token module's revoke callback and the implementation's on_revoke callback, a state-mutating sink. The sibling operations refresh/2 and exchange/4 both call decode_and_verify first, so the signature is checked before anything acts on the claims; revoke/3 is the only state-mutating path that acts on claims without verifying the signature. An attacker who knows or guesses a victim's identifying claim values (jti, sub) can forge a JWT carrying those claims, sign it with an arbitrary key, and submit it to any endpoint that funnels a caller-supplied token into Guardian.revoke/3 (the standard logout / session-revocation pattern). When the token module mutates state keyed by the claims (whitelist deletion or blacklist insertion, for example a GuardianDb-style store), the victim's legitimate session is evicted. This is an unauthenticated session-revocation denial of service; the attacker never needs the signing secret. This issue affects guardian: from 1.0.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 8.2

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

CVE-2026-55734

SUMMARY

Allocation of Resources Without Limits or Throttling vulnerability in ueberauth guardian (Guardian.Permissions module) allows a denial of service via BEAM atom-table exhaustion. This vulnerability is associated with program file lib/guardian/permissions.ex and program routines 'Elixir.Guardian.Permissions':encode_permissions!/1, 'Elixir.Guardian.Permissions':encode_permissions_into_claims!/2, 'Elixir.Guardian.Permissions':do_encode_permissions!/2. The Guardian.Permissions mixin installs a public encode_permissions!/1 function on every module that does use Guardian.Permissions. For each key of the supplied map, encode_permissions!/1 calls String.to_atom(to_string(k)) before any validation runs. The integer-value clause of do_encode_permissions!/2 then short-circuits straight to encoding without validating the key against the configured permission set, so a key with an integer value is interned as a fresh atom with no exception raised. Atoms are never garbage collected and the BEAM atom table is a fixed-size resource (default roughly 1,048,576 entries), so each unique attacker-chosen key permanently consumes one slot. An attacker who can influence a permission map that reaches encode_permissions!/1 (for example a permissions map read from a request body and passed into token issuance via encode_permissions_into_claims!/2) can mint an unbounded number of atoms and exhaust the atom table, crashing the entire BEAM node and every service running on it. The sibling decode_permissions/1 is not affected because it skips keys absent from the configured permission set. This issue affects guardian: from 2.0.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 6.9

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

CVE-2026-55733

SUMMARY

Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of service via unbounded atom creation from attacker-controlled binary input. Guardian.Permissions.AtomEncoding encodes permission scopes by passing arbitrary binaries to String.to_atom/1. When encode/3 in lib/guardian/permissions/atom_encoding.ex is called with a list, each binary entry is handled by the encode_value/3 binary clause, which calls String.to_atom(value) with no allow-list check. The perm_set argument (the application's small, finite set of legitimate permission names) is discarded, so any external string flows straight into atom creation. This encoder is selected with use Guardian.Permissions, encoding: Guardian.Permissions.AtomEncoding and reached through the imported encode/3 entry point. String.to_atom/1 creates a brand-new atom for every previously unseen binary, atoms are never garbage collected, and the BEAM atom table is fixed at roughly 1,048,576 entries by default. An application that funnels attacker-influenced permission scopes (from a request body, a JWT claim, or other external input) into encode/3 therefore mints one permanent atom per distinct value. A modest stream of varied, unauthenticated input permanently consumes the atom table and crashes the BEAM node with system_limit, taking down every application running on it. The default encoder is Guardian.Permissions.BitwiseEncoding, which is not affected. This issue affects guardian: from 2.0.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 6.9

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

CVE-2026-54894

SUMMARY

Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of service via unbounded atom creation from attacker-influenced binary input. Guardian.Plug.Keys derives connection and session namespace keys by passing arbitrary binaries to String.to_atom/1. base_key/1 in lib/guardian/plug/keys.ex converts any binary into the atom :"guardian_<input>", and the derived helpers claims_key/1, resource_key/1, and token_key/1 create a second atom on top of that. key_from_other/1 likewise converts a regex-captured binary through String.to_atom/1. The public specs advertise String.t() as a valid argument, so passing a string is documented usage, and higher-level entry points such as Guardian.Plug.current_token(conn, key: key) thread the caller-supplied key straight into these functions. String.to_atom/1 creates a brand-new atom for every previously unseen binary, atoms are never garbage collected, and the BEAM atom table is fixed at roughly 1,048,576 entries by default. An application that routes attacker-influenced data (a tenant identifier, header, or other request input) into a Guardian key therefore mints one permanent atom per distinct value. A modest stream of varied, unauthenticated input permanently consumes the atom table and crashes the BEAM node, taking down every application running on it. This issue affects guardian: from 0.1.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 6.9

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

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