Back to overview
Confidence MediumApr 4, 2025australiansuper.com

AustralianSuper hit by credential stuffing attacks

PatternExternal actor · Hacking · Confidentiality impact

AustralianSuper, one of Australia's largest superannuation funds, was impacted by a wave of credential stuffing attacks. Approximately 600 member accounts were breached, resulting in the theft of around $500,000 from four members. The attackers exploited the lack of multi-factor authentication (MFA) in some accounts.

Signal date
Apr 4, 2025
Updated
Jun 26, 2026
Confidence
Medium
Sources
1 source

Signal context

First seen: Apr 4, 2025

Last updated: Jun 26, 2026

Status: Public signal

Key points

  • 600 accounts breached.
  • Approximately $500,000 stolen from four members.
  • Part of a larger credential stuffing campaign targeting Australian pension funds.

Signal analysis

Beta

It helps compare this signal with other published signals without treating the labels as final determinations.

Affected organization
Australiansuper logo
Australiansuper

Likely country: 🇦🇺 Australia

inferred from signal text

    Threat source
    Hacking activity

    Watch internet-facing systems, credential abuse and exploit activity.

    • Source type: outside the affected organization
    Business impact
    Potential data exposure

    Impact area: Confidentiality

    Likely asset: User or customer data

    Trend context
    69 signals with similar action pattern
    • 1 signal in the same sector
    • 90 signals with the same likely impact area
    • 1 signal linked to this organization/domain
    Mentioned entities
    AustraliansuperData DisclosureAustralianSuperAustraliaApproximatelyMFAPart ofAustralian

    External sources

    Related signals

    Grouped by why the signal is relevant.

    nifty.com logoNiftyJun 28, 2026
    Same action patternSame impact area

    NIFTY Corporation Affected by KDDI Corporation Data Breach

    NIFTY Corporation, a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. NIFTY Corporation customers' email addresses and passwords may have been compromised.

    biglobe.ne.jp logoBiglobeJun 28, 2026
    Same action patternSame impact area

    BIGLOBE Inc. Affected by KDDI Corporation Data Breach

    BIGLOBE Inc., a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. BIGLOBE Inc. customers' email addresses and passwords may have been compromised.

    stnet.co.jp logoStnetJun 28, 2026
    Same action patternSame impact area

    STNet, Inc. Affected by KDDI Corporation Data Breach

    STNet, Inc., a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. STNet customers' email addresses and passwords may have been compromised.

    kddi-web.com logoKddi WebJun 28, 2026
    Same action patternSame impact area

    KDDI Web Communications Customer Data Affected by KDDI Email System Breach

    KDDI Web Communications, a subsidiary of KDDI, was impacted by the data breach in KDDI Corporation's email system, disclosed on June 28, 2026. The incident, caused by a third-party software vulnerability, led to the potential exposure of up to 14.2 million email addresses and passwords belonging to customers across six Japanese ISPs, including KDDI Web Communications.

    jcom.co.jp logoJcomJun 28, 2026
    Same action patternSame impact area

    JCOM Co., Ltd. Affected by KDDI Corporation Data Breach

    JCOM Co., Ltd., a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. JCOM customers' email addresses and passwords may have been compromised.

    polymarket.com logoPolymarketJun 28, 2026
    Same action patternSame impact area

    Polymarket Suffers $3 Million Crypto Drain via Third-Party Vendor Compromise

    Prediction market platform Polymarket disclosed a breach where hackers compromised a third-party vendor. The attackers injected malicious code into the Polymarket website for some users, leading to the draining of approximately $3 million in pUSD (USDC-backed) from at least 11 user wallets. The stolen funds were subsequently swapped and moved to Ethereum. Polymarket has contained the incident, committed to full refunds for affected users, and is in the process of notifying victims. This incident highlights supply-chain vulnerabilities in web frontends and crypto platforms.