What is the official website of Optus ?

The official website of Optus is http://www.optus.com.au.

What is Optus's cybersecurity risk score?

Optus has an AI-generated cybersecurity risk score of 677 out of 1000, indicating a Weak security posture according to Rankiteo's assessment.

How many security incidents has Optus experienced?

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

Has Optus been affected by any supply chain cyber incidents ?

According to Rankiteo, Optus has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.

Does Optus have SOC 2 Type 1 certification ?

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

Does Optus have SOC 2 Type 2 certification ?

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

Does Optus comply with GDPR ?

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

Does Optus have PCI DSS certification ?

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

Does Optus comply with HIPAA ?

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

Does Optus have ISO 27001 certification ?

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

Which industry does Optus operate in ?

Optus operates primarily in the Telecommunications industry.

How many employees does Optus have ?

Optus employs approximately 11,105 people worldwide.

Does Optus own any subsidiaries ?

Optus presently has no subsidiaries across any sectors.

How many LinkedIn followers does Optus have ?

Optus's official LinkedIn profile has approximately 173,339 followers.

What is the NAICS classification code for Optus ?

Optus is classified under the NAICS code 517, which corresponds to Telecommunications.

Does Optus have a Crunchbase profile ?

No, Optus does not have a profile on Crunchbase.

Does Optus have a LinkedIn profile ?

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

How many cybersecurity incidents has Optus experienced ?

As of August 8, 2026, Rankiteo reports that Optus has experienced 8 cybersecurity incidents.

How many peer or competitor companies does Optus have ?

Optus has an estimated 10,279 peer or competitor companies worldwide.

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Optus

Boost Score +25 with badge (5 left)

677

/1000

Weak

702

/1000

Moderate

Optus Vendor Cyber Rating & Cyber Score

optus.com.au

Add Your Compliance Badge

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 your account. You can also visit our Contact Us page for other ways to get in touch: optus.com.au/contactus. We monitor public social media mentions of Optus to support customers. Any information you share is handled under our Privacy Policy: optus.com.au/privacy.

Optus A.I CyberSecurity Scoring

Scoring History

Optus

Optus CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

Optus

Breach

7/2026

OPTMEDQAN178477...

Singtel

Cyber Attack

2/2026

TPGM1-SINSTA177...

Singtel

Cyber Attack

100

2/2026

SIMSTASINM1-177...

Singtel

Cyber Attack

7/2025

M1-SINSTA177061...

Optus

Cyber Attack

100

09/2022

OPT2353111122

Optus

Breach

100

6/2022

OPT186211809122...

Optus

Breach

02/2021

SIN18512322

Optus

Breach

6/2000

OPT2318111122

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A.I.

Optus 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 Optus

Incidents vs Telecommunications Industry Avg (This Year)

Optus has 46.52% fewer incidents than the average of same-industry companies with at least one recorded incident.

Incidents vs All-Companies Average (This Year)

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

Incident Types Optus vs Telecommunications Industry Avg (This Year)

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

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

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SUBSIDIARY

Optus Subsidiaries

Optus

Telecommunications

Website: http://www.optus.com.au

Company Size: 5,001-10,000 employees

SingtelTelecommunications

NCS GroupIT Services and IT Consulting

Singtel Global ServicesIT Services and IT Consulting

Singtel MediaAdvertising Services

Optus Satellite and Space SystemsDefense and Space Manufacturing

Optus WholesaleTelecommunications

Optus SportBroadcast Media Production and Distribution

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TIM

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NEWS

Optus CyberSecurity News

Latest updates, reports, and threat intel affecting the global network.

March 11, 2026 07:06 PM

Singaporean company suspected to have paid Optus ransomware

Senior officials involved in the government's response to the massive Optus data breach in 2022 believe the telco's Singaporean owner agreed to an...

Read Article

February 11, 2026 08:00 AM

Regulators watch as Optus works to restore mobile services for affected users

Optus continues to work through a mobile network software issue that has left around 35000 customers without full service, according to its...

Read Article

December 09, 2025 08:00 AM

Optus and Medibank class actions: The cyber moment that could reprice the market

Two data breach class actions could redraw the legal landscape and force insurers and brokers to rethink how they price and structure cyber...

Read Article

November 19, 2025 08:00 AM

Optus penalised $826K for breaching anti-scam rules

Optus penalised $826K for breaching anti-scam rules ... Optus Mobile has been fined $826,320 after an investigation by the Australian...

Read Article

September 22, 2025 07:00 AM

Optus errors result in multiple fatalities; Independent Review Launched

Australian telco Optus is under intense scrutiny following a major technical failure that left parts of the country unable to access Triple...

Read Article

September 21, 2025 07:00 AM

Two days before fatal outage, Optus boss boasted of war gaming crises

Stephen Rue told the Financial Review Cyber Summit the company had been practising its response to major problems. Two days later he had...

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September 20, 2025 07:00 AM

Optus firewall upgrade behind 13-hour Triple Zero outage

Optus CEO Stephen Rue said that a “regular” firewall upgrade at 12.30am on Thursday caused Triple Zero calls on the network to fail for 13...

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September 03, 2025 07:00 AM

Cybersecurity: Digital literacy and security of identity will beat back scammers

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September 03, 2025 07:00 AM

Turning transformation into performance for Australian enterprises

Being future-ready is no longer about resilience alone – it means adapting at speed while boosting performance, an AFR–Optus roundtable...

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CVE

Latest

Global CVEs (Not Company-Specific)

CVE-2026-52880

SUMMARY

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions from 1.7.14 through 1.7.17 are vulnerable to a remotely triggerable denial of service. Both REST APIs are started with the Gin Engine.Run convenience method, which serves requests through Go's default HTTP server with no ReadHeaderTimeout, ReadTimeout, or MaxHeaderBytes configured. As a result, incoming connections that never complete their request headers are held open indefinitely. When a REST listener is reachable beyond localhost through the documented all-interface bind or a Docker port-publish deployment, a single unauthenticated client can open many slow-header connections and hold them open until server file descriptors are exhausted, preventing the API from accepting new connections. This renders the REST API unavailable to legitimate clients. This issue is fixed in version 1.7.18.

Published

Date2026-08-07

Updated

Date2026-08-07

RISK INFORMATION (Score: 7.5)

cvss3

Base Score: 7.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score

3.6

Exploitability

3.9

REFERENCES

CVE-2026-52879

SUMMARY

Klever-Go is the Go implementation of the Klever blockchain protocol. In versions 1.7.14 through 1.7.17, the direct-message ingress handler spawns a new goroutine for every incoming direct message before the processor-level antiflood layer makes any admission decision, with no semaphore, throttler, or bound on the number of concurrent in-flight spawns. Because the antiflood check runs inside the spawned goroutine rather than before it, a single connected peer can open a direct-send stream and send a stream of well-formed messages to force unbounded goroutine creation, where each goroutine allocates its own stack and holds a message reference until processing completes, adding scheduler and garbage-collection pressure faster than the runtime can drain it. This lets one peer degrade the node's availability and its ability to process legitimate traffic, resulting in a remotely triggerable denial of service. The issue is fixed in 1.7.18.

Published

Date2026-08-07

Updated

Date2026-08-07

RISK INFORMATION (Score: 7.5)

cvss3

Base Score: 7.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score

3.6

Exploitability

3.9

REFERENCES

CVE-2026-52878

SUMMARY

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions 1.7.14 through 1.7.17 are vulnerable to a nil-pointer panic triggered by a protobuf Transaction whose embedded RawData sub-message is omitted. This omission causes RawData to decode to nil. Every transaction gossiped on the Klever-Go P2P network is decoded and validated synchronously inside the libp2p pubsub topic-validator callback, where txVersionChecker.CheckTxVersion dereferences tx.RawData.Version with no nil check. Because the libp2p pubsub callback, the underlying go-libp2p-pubsub validation worker, and Klever's own network/p2p layer install no recover(), the panic propagates and crashes the entire node process. The attacker payload is a 3-byte protobuf message; no validator key, stake, funds, or on-chain account is required, and delivery aimed at enough of the BLS validator set can halt block production, resulting in a chain halt. This issue has been fixed in version 1.7.18.

Published

Date2026-08-07

Updated

Date2026-08-07

RISK INFORMATION (Score: 7.5)

cvss3

Base Score: 7.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score

3.6

Exploitability

3.9

REFERENCES

CVE-2026-49343

SUMMARY

Klever-Go is the Go implementation of the Klever blockchain protocol. In versions prior to 1.7.18, the account-data trie syncers are vulnerable to a resource-exhaustion flaw that leaks bounded throttler slots on error paths. In syncDataTrie() (in both userAccountsSyncer.go and kappAccountsSyncer.go), StartProcessing() reserves a slot from the NumGoRoutinesThrottler, but the corresponding EndProcessing() is only called on the success path and on the duplicate-root early return. As a result, any error from trie.NewTrie(), trie.NewTrieSyncer(), or trieSyncer.StartSyncing() (including the network-dependent timeout path) permanently consumes one slot for the lifetime of the throttler. An attacker who can repeatedly cause trie-node sync failures or timeouts during bootstrap can exhaust the bounded throttler, after which further account-data trie syncs stop making progress and SyncAccounts() returns a timeout. Because epoch bootstrap in syncUserAccountsState() and syncKappAccountsState() aborts on any such error, this causes bootstrap to fail, a core availability issue affecting fresh, restarting, or resyncing nodes and validators. This issue is fixed in version 1.7.18.

Published

Date2026-08-07

Updated

Date2026-08-07

RISK INFORMATION (Score: 5.9)

cvss3

Base Score: 5.9

Complexity: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score

3.6

Exploitability

2.2

REFERENCES

CVE-2026-48122

SUMMARY

Ruby LSP is an implementation of the language server protocol for Ruby. Several workspace-level settings in the Ruby LSP VS Code extension prior to version 0.10.4 could override the path to the Ruby executable, the version manager executables, or the Bundler `Gemfile` used at startup. A malicious repository containing a `.vscode/settings.json` could set these values to attacker-controlled targets. Opening and trusting the repository would then execute code with the privileges of the developer. The Ruby LSP gem and clients of the language server in other editors are not affected. Version 0.10.4 of the Ruby LSP VS Code extension fixes the issue.

Published

Date2026-08-07

Updated

Date2026-08-07

RISK INFORMATION (Score: )

cvss4

Base Score: 5.4

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/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

https://github.com/Shopify/ruby-lsp/security/advisories/GHSA-2x7g-8mp4-572w

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