Recognizing WhatsApp Scams: Fake Chats, Phishing and Social Engineering

WhatsApp isn’t just a communication tool—it’s also a tool for attacks. Attackers, scammers, and bullies deliberately exploit the messaging app: they create deceptively realistic fake chat histories, send manipulative messages in groups, gain unauthorized access via public group links, and exploit the trust people place in familiar contacts for social engineering attacks.

This article explains the types of scams that exist on WhatsApp, how they work—and how companies can protect their employees from them.

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Fake WhatsApp Chats: Realistic Fakes in Minutes

How easy is it to fake a WhatsApp chat history?

The answer is uncomfortable: very easy. There are specialized apps available in the official app stores for Android and iOS, as well as several websites dedicated to this very purpose. Tools like fakewhats.com allow you to design a WhatsApp chat history graphically—with freely selectable sender names, timestamps, profile pictures, and message content.

The more labor-intensive but 100% “real” method: Two people coordinate, one renames their contact accordingly, and both type the desired content—the resulting screenshot is then a genuine screenshot of a real WhatsApp chat.

Both methods produce results that are visually almost indistinguishable from an authentic chat history.

What specific harm does this cause?

What is marketed as a fun tool for harmless pranks has a serious downside:

Bullying in schools: Students use fake chat generators to defame classmates or incriminate teachers with fabricated, inappropriate conversation histories. Those affected can hardly defend themselves—because the authenticity of a screenshot is difficult to refute.

Reputation damage and blackmail: Fake chat histories can be used in both private and professional settings to discredit individuals, exert pressure, or seemingly substantiate false claims.

Falsification of evidence: In a legal context, WhatsApp screenshots are increasingly appearing as purported evidence. The problem: Without forensic examination, their authenticity can neither be confirmed nor refuted.

Consequences for companies

Without forensic examination, screenshots from WhatsApp chats are of limited value as evidence in labor law or criminal disputes. Companies that document internal compliance incidents or wish to use employee communications as evidence should not rely solely on messenger screenshots.

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Messenger Phishing via WhatsApp: The Contact Trust Attack

The Basic Principle of WhatsApp Phishing

Email phishing is well known—but messenger phishing is still underestimated in many companies. WhatsApp offers attackers a decisive advantage over email: trust in the sender is higher. A message that appears to come from a known contact triggers less skepticism than an anonymous email.

The most common attack patterns:

Account takeover as a starting point: Attackers first take over a contact’s WhatsApp account (e.g., through SIM swapping or compromising a WhatsApp Web session). They then message that person’s contacts on their behalf.

Direct impersonation: Without taking over an account, contact names are set up in a new account to mimic a familiar person. Those who don’t pay close attention to the phone number may not notice the deception.

Urgent requests for money: A typical pattern is: “I urgently need money; I can’t check my phone right now—can you quickly transfer X euros to me?” The message appears to come from a family member or a close colleague.

WhatsApp as a Channel for CEO Fraud

In a business context, WhatsApp is increasingly being misused for CEO fraud variants. Attackers pose as executives and pressure employees to make quick transfers or disclose confidential information—citing alleged urgency and requesting that no other channels be used.

The pattern resembles classic email CEO fraud but exploits the heightened trust in the messaging platform.

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Dangerous Messages in WhatsApp Groups

Groups as a Multiplier for Attacks

WhatsApp groups exponentially increase the reach of an attack. What affects one victim in a single message can affect up to 100 victims in a group with 100 members with the same effort.

Specific forms of attacks in groups:

Files infected with malicious code: Attackers send files in groups that are disguised as images, PDFs, or documents but may contain malicious code. This is not an abstract threat—in 2017, Check Point demonstrated how a specially crafted image in the web version of WhatsApp can lead to complete account takeover.

Psychological manipulation through chain letters: Classic chain letters—“Forward this to 10 contacts, or else…”—are a form of social engineering. They create a false sense of urgency and exploit the desire to protect or warn social groups.

Disinformation and fake news: Groups are a preferred channel for spreading false information. In a corporate context, this can lead to poor business decisions if unverified information is treated as fact.

“Scary Messages” as Denial-of-Service: As described in the security article, specially crafted messages containing unreadable characters can cause WhatsApp to crash on recipients’ devices. Such messages are typically spread in groups to target as many victims as possible at once.

What Group Administrators Need to Know

Anyone who administers a WhatsApp group bears responsibility for protecting its members. The following measures reduce the risk:

Restrict messaging rights: In groups with a one-way flow of information (e.g., class information groups, company announcements), the setting should be enabled so that only administrators can send messages. This prevents third parties from spreading messages via a compromised or infiltrated account.

Selecting Administrators: Not all members should be granted administrator rights. Administrator rights allow the removal of other members, changes to group settings, and management of posting permissions.

Identifying Unknown Senders: If a person suddenly becomes active in the group whom no one knows—and they joined via a compromised invitation link—the member should be removed and the link reset.

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Public Group Invitation Links: The Gateway for Intruders

How Strangers Sneak into Private Groups

WhatsApp group invitation links are a convenient feature—and a significant security risk if they are inadvertently made public. Anyone who has such a link can join the group without needing to be invited by a member.

Such links become public when:

• A group member accidentally shares the link on social media, forums, or via email
• The link appears in a screenshot that is shared publicly
• The link is published on a website and indexed by search engines

At a time when Bing had not yet taken countermeasures, more than 200,000 WhatsApp group chats were publicly discoverable using a simple site:chat.whatsapp.com search operator—including private family, sports, and club groups.

Who is in your group?

An attacker who has joined a company group via a publicly leaked link can:

• Read all messages and shared files
• View profile pictures and phone numbers of all members
• Send messages in the style of other members (social engineering)
• Distribute malicious files or links

Recommendation: Regularly check the member list of your WhatsApp groups—especially for corporate groups. If an unknown member appears: Remove them and immediately reset the invitation link (Group Info > Invitation Link > Reset Link).

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Secure Group Management: 7 Rules for WhatsApp Groups in a Corporate Context

Specific rules of conduct can be derived from all the attack scenarios described:

1. Do not forward chain letters Chain letters rarely contain verified information. Forwarding them may spread misinformation or help attackers distribute malicious code.

2. Do not open unknown files Images, PDFs, and documents from unknown or unexpected sources should not be opened—even if the sender appears to be a known contact. When in doubt: verify via another channel.

3. Check messages before forwarding WhatsApp flags forwarded messages. This is a first indication—but not proof of authenticity. Important information from groups should be verified through official channels.

4. Do not share invitation links publicly Group invitation links do not belong on websites, in public forums, or in open social media posts. New members should be invited individually via trusted channels.

5. Use the administrator function strategically The option to restrict writing permissions to administrators should be enabled by default in information groups. The “send to all” function can then be opened for specific discussion phases and restricted again afterward.

6. Report suspicious activity immediately If suspicious messages appear in a company group or unknown members join, this should be reported immediately to the IT security team or management.

7. Do not accept screenshot evidence uncritically Given how easily WhatsApp chat histories can be faked, screenshots from messaging apps should be critically scrutinized in legal or disciplinary proceedings.

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Broadcast Lists as a Safer Alternative to Groups

For situations where information needs to be sent to many recipients without them coming into contact with one another, WhatsApp offers broadcast lists as an alternative.

The difference: Recipients of a broadcast list receive the message as an apparently personal direct message and cannot see the replies from other recipients. There is no shared group space where members could influence or attack one another.

Suitable use cases:

• Event announcements that do not require discussion
• Information for many recipients who are not supposed to know each other
• Invitations to events

Not suitable for broadcast lists: All forms of collaborative communication where an exchange between participants is desired.

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Phishing Simulations: How to Test Your Team’s Resilience

The ability to recognize phishing attempts—including those via messengers like WhatsApp—is a skill that can be learned. Studies consistently show that people who were confronted with simulated phishing attacks in controlled environments and subsequently received an explanation perform significantly better in later real attacks.

A phishing simulation typically includes:

• Sending deceptively real phishing messages to employees (in coordination with company management)
• Documenting who falls for the simulation and what actions are taken
• Targeted training for the affected individuals afterward
• Measuring improvement over time

Messenger phishing can be integrated into such simulations as an additional channel—this makes the results more realistic and the training more effective.

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What to do if you’ve fallen victim to a WhatsApp scam?

If you or employees at your company have fallen victim to a WhatsApp scam:

Immediate actions:

• Secure your WhatsApp account immediately: Enable two-step verification, check all linked devices, and end any unrecognized sessions
• Notify contacts: If your account has been compromised, all relevant contacts should be notified via another channel so they know that messages may have been sent in your name
• File a police report: In cases of extortion, fraud, or defamation, a report should be filed with the police—messenger communications can be preserved as digital evidence

For companies:

• Notify the IT security team
• Document the incident (time, type of message, affected individuals)
• Check whether confidential company data has been compromised
• Inform employees about the incident promptly without causing panic

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Conclusion: Trust is the biggest risk factor

WhatsApp scams work because they exploit the trust we place in familiar contacts, in familiar user interfaces, and in seemingly authentic messages. Fake chat histories look real. Messages from “friends” aren’t questioned. Group links appear harmless.

Technical security measures help—but the decisive protective factor is the awareness of the people who use WhatsApp every day. Those who know how fake chats are created will view screenshots more critically. Those who know how messenger phishing works will ask questions when faced with unexpected payment requests. Those who know how group links become public will be more careful about sharing.

Security awareness is not a one-time training session—it is an ongoing process. Learn how AWARE7 can support you in this: /services/security-awareness/

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Further reading: Check out our article WhatsApp Security and Privacy, which covers encryption, the backdoor debate, WhatsApp Web risks, and privacy settings.