Dangerous SIM swap Scam Steals Life Savings

7 June 2026 Poland Radar 0 Comments

A SIM swap attack can redirect your SMS codes and drain bank accounts. Learn how to act fast and protect yourself from SIM swap.

Imagine your phone suddenly loses mobile signal. It could be the start of a SIM swap attack.

Table of Contents

How the SIM swap works

Criminals collect personal data first, for example via phishing. Consequently, they impersonate you at a mobile shop or call the operator. Moreover, they often claim a lost phone and request a new SIM. Therefore the operator deactivates your SIM and activates a duplicate. In addition, all SMS one-time passwords then arrive on the thief’s device. As a result, criminals can log in to your banking app and move money in minutes.

Signs and immediate steps

The first sign often appears as sudden signal loss. However, many people ignore the problem as a temporary outage. If so, call your operator immediately and verify your SIM status. Next, contact your bank and block online access without delay. Moreover, report the incident to the police. In Poland, you should mention any loss of funds in your report. Therefore act within minutes when you suspect foul play.

Why this matters to expatriates

Expats often rely on smartphones for two-factor authentication. Consequently, losing a number jeopardises online banking, email, and social media. In addition, many official services in Poland link to PESEL (a national identification number). PESEL lets institutions find your records at ZUS (social security) or NFZ (public health insurer). Therefore attackers who misuse your phone can cause more than monetary loss. For example, they may attempt credit applications in your name. Moreover, they can intercept public institution notices about fines or legal matters.

How to reduce risk

First, avoid entering personal data on suspicious websites. In addition, prefer app-based authenticators or hardware tokens instead of SMS codes. Consequently, thieves cannot intercept your one-time codes. Second, ask your mobile operator to add a PIN or password to your account. Moreover, request a PESEL restriction if you can. PESEL restriction prevents others from opening contracts or taking loans using your number. However, note that some expats do not have PESEL. Therefore ask your bank and operator about equivalent safeguards if you hold only a foreign ID.

Third, keep copies of identity documents secure. In addition, monitor your bank statements for unusual transfers. Consequently, you can act quickly after suspecting fraud. Finally, contact the Office of Electronic Communications (UKE) and your bank’s fraud team if an attack occurs. Moreover, follow up your police report with written evidence from your operator and bank.

💡 GOOD TO KNOW: If you are an expat, register security measures early. Ask your operator to add an account PIN and ask your bank for non-SMS two-factor options. Also, if you have PESEL (the Polish national ID number), apply for a PESEL restriction to block contracts in your name. If you lack PESEL, request alternative identity safeguards from your bank. Keep emergency contact numbers for your operator, bank, and local police saved outside your phone.

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