The anti-blocking feature claimed by WhatsApp GB is achieved by changing the device fingerprints (12 parameters such as IMEI and MAC address). In 2024, Kaspersky Lab tests found that its accuracy level in simulating parameters was 89%, but Meta’s machine learning detection system was still capable of detecting 23% of the simulation activities. This product embraces IP rotation technology (alternating 3.7 times every second and establishing 128 proxy nodes globally), lowering the mean daily ban rate of an individual account from 12% to 4.5%. Nevertheless, statistics from the Telecommunications Authority of India in 2024 indicate that the devices employing this feature still possess a 17% likelihood of causing permanent bans. Technical reverse engineering has found that its simulation algorithm of behavioral pattern has a delay in response time of 0.8 seconds, which translates to a 91% detection rate of anomalous operations like “message bombing” (greater than 30 messages per second).
The centerpiece of the anti-blocking system is the virtual environment isolation technology. By attaching the system API to build a sandbox (with another 380MB of memory), the run data of WhatsApp GB is isolated from the original device. The 2025 Palo Alto Networks research report stated that this technology controlled the error rate of device fingerprint authentication within ±5.2%, but the Article 25 EU GDPR compliance audit found that 14% of the real device information still remained in its data storage path. Actual effectiveness statistics show that with three cloned accounts operated at the same time, the anti-blocking feature has increased the 7-day retention rate to 78% (32% without protection plan), but Egyptian 2024 instances of cybercrime show that the instances of phishing fake accounts created by hackers exploiting this feature are up 217% year to date.
Legally, the anti-blocking feature violates Article 1030 of the Computer Fraud and Abuse Act. According to a court ruling by Munich District Court, Germany, in 2025, consumers who use the feature will be required to pay a fine of 1,200 euros per incident. Technical evidence collection has proven that its IP rotation feature would reveal customers’ real IP addresses (probability of 6.3%). In a telecommunication fraud case in 2024, the Sao Paulo State police force of Brazil was able to identify successfully 87% of the gadgets involved in the fraud with this vulnerability. Despite the risks incurred, according to a survey by an Indonesian social media marketing company, 69% of users still subscribe due to its “Message Bombing Protection” (with the sending limit increased to 200 messages per minute), which enhances ad reach efficiency by 41%, but with the costs of maintaining a CPU load of over 72% on their devices for a prolonged duration (the official one is just 35%).
User behavior data shows that when the anti-blocking function was on, the mean lifetime of accounts was boosted to 63 days (19 days in the disabled category), but Meta’s new risk control model introduced in 2025 reduced that figure by 17% since 2024. Technical logging analysis shows the anti-blocking module automatically resets 23 device parameters (Android_ID, Build.Serial included) every 12 hours, but it has a 15% chance of failure on Samsung Exynos 2200 chip-based devices. Although WhatsApp GB developers claimed that the anti-blocking system had passed the ISO/IEC 27001 certification, in 2025, a Dutch security company EclecticIQ disclosed that its encrypted certificates passed CRL (Certificate Revocation List) checks and then took the success rate of the man-in-the-middle attacks to 8.9%.