- Scam
04 3455 1144 (0434551144): One contributor reports impersonation of Australian Cyber Security Centre with personal information already known.
ACSC Impersonation Report for 04 3455 1144
A contributor has reported receiving a call from 04 3455 1144 (also written as 0434551144) claiming to be from the Australian Cyber Security Centre (ACSC). The caller demonstrated knowledge of the recipient's name, phone number, and email address, creating a false sense of legitimacy typical of impersonation tactics.
The fact that the caller already possessed personal information is a significant red flag. This suggests either data sourcing from previous breaches or targeted list purchasing, common techniques in sophisticated impersonation scams targeting Australian mobile numbers.
What the Caller from 04 3455 1144 Claims
The caller impersonated the Australian Cyber Security Centre, an official Australian government agency. By claiming ACSC affiliation, the caller leveraged the organisation's credibility to build trust with the recipient.
The caller's possession of personal details (name, number, email) was used to reinforce the false claim of legitimacy. This is a deliberate social engineering tactic - when callers already know your information, targets are far more likely to believe they are speaking with a legitimate organisation.
Call Patterns and Reporting
The call to 0434551144 was answered, indicating the recipient engaged with the caller. The mobile number is allocated to Optus Mobile, one of Australia's major carriers. While only one report has been logged for 04 3455 1144, impersonation scams of this nature often target multiple recipients across similar carrier pools.
What to Do If You Receive a Call from 04 3455 1144
If 04 3455 1144 or a similar number contacts you claiming to be from the ACSC or another government agency:
- Do not: Provide personal information, passwords, banking details, or remotely access your devices
- Do not: Click links or download software the caller suggests
- Do: Hang up immediately and verify the caller independently
- Do: Contact the ACSC directly via their official website (cyber.gov.au) to confirm any alleged security issues
- Do: Block the number 04 3455 1144 on your phone to prevent repeat calls
Government agencies will never cold-call you demanding personal information or asking you to take immediate action based on security threats. If you're unsure whether a call is legitimate, always end the call and contact the organisation directly using a phone number from their official website, not a number provided by the caller.
How to Report 04 3455 1144
If you receive similar impersonation calls from 04 3455 1144 or other numbers:
- Report to the Australian Communications and Media Authority (ACMA) at acma.gov.au
- Report to Scamwatch (scamwatch.gov.au) with details of what the caller claimed
- Report cyber-related scams to the Australian Cyber Security Centre via cyber.gov.au
- Contact your mobile provider (Optus) to report the number for potential blocking
- Contribute your experience to Reverseau to help other Australians identify this number
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WRITE A REVIEWFrequently Asked Questions
What should I do if the caller from 04 3455 1144 already knows my personal details?
Knowing your name, email, or phone number does not mean the caller is legitimate. Scammers obtain personal information from data breaches, public records, or purchased lists. Even if 04 3455 1144 has your details, hang up and independently verify by contacting the ACSC directly via cyber.gov.au. Never provide additional information to callers claiming to be from government agencies.
Is the Australian Cyber Security Centre (ACSC) calling from 04 3455 1144?
No. The real ACSC does not make unsolicited cold calls to individuals. If you receive a call from 04 3455 1144 or similar claiming to be the ACSC, it is impersonation. The ACSC may contact you via official channels if you have reported a genuine breach, but they will never ask you to take immediate action or provide sensitive information during a cold call.
Should I call back 0434551144 to verify the caller?
No. Do not return calls to 0434551144 or numbers claiming to be from government agencies. Calling back can confirm your number is active to scammers. Instead, hang up and independently contact the organisation using a number from their official website. For cybersecurity concerns, visit cyber.gov.au or contact your bank directly using their official phone number.
What information did the caller from 04 3455 1144 request?
One contributor reported that the caller from 04 3455 1144 claimed to be from the ACSC and already had their name, number, and email. The report indicates the caller was attempting to request additional personal information, though the contributor did not disclose the specific details requested before hanging up.
Is 04 3455 1144 a known Optus number?
04 3455 1144 (0434551144) is allocated to Optus Mobile, but this allocation means the SIM was issued by Optus - it does not mean Optus is responsible for the call or that the number is currently active with a legitimate user. Scammers often use spoofed numbers or VoIP services that appear to be from real carriers.
How can I protect myself from ACSC impersonation calls like 04 3455 1144?
Remember that government agencies including the ACSC do not make unsolicited calls asking for personal information or demanding immediate action. If you receive a call from 04 3455 1144 or similar claiming urgent security issues, hang up. Always independently verify by contacting the organisation directly using a number from their official website, never one provided by the caller.