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Comparison Overview

TelstraTelstra
VS
OptusOptus
Telstra

Telstra

400 George St, Sydney, NSW, AU, 2000

Last Update: 02/04/2026

View Profile
740/1000Moderate

We believe it’s people who give purpose to our technology. So we’re committed to staying close to our customers and providing them the best experience. And delivering the best tech. On the best network. Because our purpose is to build a connected future so everyon...

NAICS:517
NAICS Definition:Telecommunications
Employees:35,254
Subsidiaries:5
12-month incidents
0
Known data breaches
2
Attack type number
4
Optus

Optus

1 Lyonpark Road, Macquarie Park, 2113, AU

Last Update: 23/07/2026

View Profile
Between 650 and 699
http://www.optus.com.au
677/1000Weak

Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband and digital solutions. Message our dedicated Social Media Care team at help.optus.com.au/contactus for 24/7 assistance with y...

NAICS:517
NAICS Definition:Telecommunications
Employees:11,105
Subsidiaries:7
12-month incidents
1
Known data breaches
3
Attack type number
2

Compliance Ranges Comparison

Based On Specific Ai Models Category
Telstra

Telstra

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA
Optus

Optus

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA

Benchmark & Cyber Underwriting Signals

Incidents vs Telecommunications Industry Avg (This Year)

No incidents recorded for Telstra in 2026.

Incidents

Incidents vs Telecommunications Industry Avg (This Year)

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

Incidents

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

Telstra cyber incidents detection timeline including parent company and subsidiaries.

R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

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

Optus cyber incidents detection timeline including parent company and subsidiaries.

R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

Notable Incidents

Last Cyber / HR Incidents / Global...
Telstra

Telstra

Incidents
🔒 Incident : Cyber Attack
CANADYATLHUBEPIMODGAMZOOWEWHALBETSONTEL1769527593
🔒 Incident : Breach
TEL23611122
🔒 Incident : Data Leak
TEL15346123
Optus

Optus

Incidents
🔒 Incident : Breach
OPTMEDQAN1784773430
🔒 Incident : Cyber Attack
OPT2353111122
🔒 Incident : Breach
OPT1862118091225

FAQ

Between Telstra company and Optus company, which one has the best AI Cybersecurity Score ?
Between Telstra company and Optus company, which one has experienced more cyber incidents in the past ?
Between Telstra company and Optus company, which one has experienced more cyber incidents this year ?
Between Telstra company and Optus company, which one has experienced at least one ransomware attack ?
Between Telstra company and Optus company, which one has experienced at least one data breach ?
Between Telstra company and Optus company, which one has experienced at least one targeted cyberattack ?
Between Telstra company and Optus company, which one has experienced at least one vulnerability ?
Between Telstra company and Optus company, which one holds the most compliance certifications ?
Between Telstra company and Optus company, which one holds the fewest compliance certifications ?
Between Telstra company and Optus company, which one has the most subsidiaries ?
Between Telstra company and Optus company, which one has the largest number of employees ?
Between Telstra and Optus, which company holds both SOC 2 Type 1 certifications ?
Between Telstra and Optus, which company holds both SOC 2 Type 2 certifications ?
Which company is ISO 27001 certified - Telstra or Optus ?
Which company is PCI DSS compliant - Telstra or Optus ?
Between Telstra and Optus, which company complies with HIPAA regulations for healthcare data ?
Between Telstra and Optus, which company complies with GDPR requirements ?

Latest Global CVEs

CVE-2026-8325
SUMMARY

A maliciously crafted PDF file, when parsed through Autodesk Revit, can force an Out-of-Bounds Write vulnerability. A malicious actor may leverage this vulnerability to cause a crash, cause data corruption, or execute arbitrary code in the context of the current process.

PUBLISHED
Date2026-08-06
UPDATED
Date2026-08-06
RISK INFORMATION (Score: 7.8)
CVSS3
Base Score: 7.8
Complexity: LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
IMPACT SCORE
5.9
EXPLOITABILITY
1.8
CVE-2026-7867
SUMMARY

A flaw was found in udisks2. A local attacker with an active console session can exploit insufficient authorization checking on the 'as-user' option in the org.freedesktop.UDisks2.Filesystem.Mount() D-Bus method. This allows the attacker to spoof the 'as-user' parameter, mounting filesystems on behalf of arbitrary users, including privileged accounts. This can lead to local privilege escalation through mount point injection and manipulation of the mount namespace visible to privileged users.

PUBLISHED
Date2026-08-06
UPDATED
Date2026-08-06
RISK INFORMATION (Score: 7.8)
CVSS3
Base Score: 7.8
Complexity: LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
IMPACT SCORE
5.9
EXPLOITABILITY
1.8
CVE-2026-7406
SUMMARY

A maliciously crafted BMP file, when parsed through certain Autodesk products, can force a Untrusted Pointer Dereference vulnerability. A malicious actor can leverage this vulnerability to execute arbitrary code in the context of the current process.

PUBLISHED
Date2026-08-06
UPDATED
Date2026-08-06
RISK INFORMATION (Score: 7.8)
CVSS3
Base Score: 7.8
Complexity: LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
IMPACT SCORE
5.9
EXPLOITABILITY
1.8
CVE-2026-7405
SUMMARY

A maliciously crafted TIF file, when parsed through certain Autodesk products during image import, can cause an Out-of-Bounds Read in the image handling library. A malicious actor can leverage this vulnerability to cause a denial of service

PUBLISHED
Date2026-08-06
UPDATED
Date2026-08-06
RISK INFORMATION (Score: 5.5)
CVSS3
Base Score: 5.5
Complexity: LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
IMPACT SCORE
3.6
EXPLOITABILITY
1.8
CVE-2026-71555
SUMMARY

PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. From 2.1.0 until 4.14.1, PILOS does not send a Cross-Origin-Opener-Policy response header, so pages opened by PILOS via a link that opens a new browsing context (e.g., target="_blank") retain a window.opener reference back to the originating PILOS tab. A malicious destination page reached this way can use window.opener to navigate or manipulate the original PILOS tab, a technique known as reverse tabnabbing, potentially redirecting an authenticated user to a phishing page that mimics PILOS. This issue is fixed in version 4.14.1.

PUBLISHED
Date2026-08-06
UPDATED
Date2026-08-06
RISK INFORMATION (Score: 4.1)
CVSS3
Base Score: 4.1
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
IMPACT SCORE
1.4
EXPLOITABILITY
2.3