How does phone spoofing work?
In telephone spoofing or call ID spoofing, scammers manipulate the phone number shown on your display. The fake caller ID creates the impression that the call is coming from a trusted source, such as your bank or a well-known company. This technique is used deliberately to build trust and get you to disclose personal information.
In many cases, the scammers pretend to be bank employees. They try to obtain confidential data such as one-time passwords (OTP) or login credentials. They often rely on psychological pressure and fear by claiming that unauthorized transfers or purchases have been made. Sometimes they even ask you to transfer your money to another account “for security reasons” because your own account is supposedly blocked. These statements are always a warning sign – reputable banks never ask you to take such measures over the phone.
The technology behind it primarily involves manipulating a caller ID. The scammers make your bank's real number or that of a well-known company appear on your display, even though the call actually comes from a different number. This makes the call appear legitimate, even though it is not.
Spoofing simply explained
Other types of spoofing
- Email spoofing: Email spoofing involves falsifying the sender field of an email so that the message appears to come from a trusted address. The goal is to trick recipients into clicking on malicious links or disclosing confidential data. This method is often used in phishing attacks.
- IP spoofing: IP spoofing means that the IP address in data packets is manipulated to conceal its true origin. Attackers use this technique to pose as a trustworthy system or to bypass security mechanisms, as is the case with DDoS attacks.
- GPS spoofing: GPS spoofing involves falsifying location data so that devices or systems display an incorrect location. This method can be used to deceive navigation systems or bypass location-based security features.
- Website/URL spoofing: Scammers create fake websites or links that look deceptively similar to real sites. The aim is to encourage users to enter login credentials or other sensitive information. Such links are often disseminated through phishing emails or SMS messages.
Your security comes first
Tips for protection against spoofing
- Never give out personal or bank details on websites that you have accessed via links in SMS or emails – and certainly not on your phone.
- Do not reply to suspicious SMS and delete them immediately.
- Be vigilant if you receive messages or calls that apply pressure or create panic.
- Protect your devices with the latest antivirus and anti-malware software and perform scans on a regular basis.
- Keep your operating system, browser and apps current.
- Only download apps from official stores.