According to the test data of the Global Mobile Security Alliance in 2024, the end-to-end encryption coverage rate of the GB WhatsApp app is 83%, which is lower than the 99.99% of the official WhatsApp. This application has six known security vulnerabilities, four of which have been rated as high-risk and may lead to the leakage of message content. Penetration tests show that the success rate of man-in-the-middle attacks can reach 15.2%, while the defense rate of the same type of attacks in the official application is 99.9%. The 2025 report of the European Data Protection Commission indicates that the data transmission encryption compliance of the modified application only reaches 75% of the official standard.
The privacy control function has significant flaws. This application requires 86 access permissions, which is 23 more than the official version, including some non-essential device control permissions. Digital rights groups have found that 35% of the GB WhatsApp app versions contain hidden data collection codes, uploading an average of 12.7MB of user activity records to third-party servers every day. Tests by German privacy protection agencies have shown that these data may be used for precise advertising, and the probability of user behavior data being sold to advertising networks has increased by 65%.
Analysis of the message protection mechanism shows that the anti-recall function of this application has security vulnerabilities, and 23% of the recalled messages may have been obtained by unauthorized parties. The encryption strength of group chats is 40% lower than the official version, and the risk of message leakage increases by 28% in large groups of more than 500 people. The Brazilian Cybersecurity Center has recorded that in 2024, users of modified applications are 3.8 times more likely to encounter phishing attacks than official users.
The assessment of data storage security performance indicates that the encryption strength of the local chat database is only 128 bits, while the official application uses 256-bit encryption. The probability of cloud backup files being cracked is 17 times higher than that of official services, and there is also unauthorized metadata collection behavior. A survey by the Indian Digital Rights organization found that users of the GB WhatsApp app were 42% more likely to experience account theft and 38% more likely to have their identity information leaked.
The delay in system updates brings security risks. The average release time of security patches is 47 days later than the official version, and the response time for critical vulnerability fixes has been extended by 85%. In the zero-day vulnerability incident that was exposed in March 2025, users of the GB WhatsApp app had to wait for the patch for as long as six days, while official users received the update within 24 hours. Data analysis shows that these delays increase the probability of users facing cyber security threats by 3.2 times.
Actual security incident data shows that in 2024, there will be over 2.8 million privacy breaches worldwide related to the use of modified communication applications. Among them, the average loss amount of cases involving financial fraud reached 4,800 US dollars, and the average processing time for identity theft cases was 62 days. The UK Cyber Security Centre reported that enterprises using the GB WhatsApp app have a 67% higher risk of data leakage than those using the official application.
Although the GB WhatsApp app offers certain enhancements, there are significant risks when evaluated from a privacy and security perspective. For users who attach great importance to privacy protection, it is recommended to use the official application in combination with additional encryption tools. Current data shows that 68% of users who were aware of these risks ultimately chose to return to the official application version, and 82% of the remaining users also took additional security protection measures.