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WhatsApp Flaw Exposed Phone Numbers And Photos Of 3.5 Billion Users, Say Researchers

A significant privacy issue in WhatsApp has come to light after researchers revealed that a long-standing flaw exposed the phone numbers and profile photos of nearly 3.5 billion users worldwide. The discovery was made by a team from the University of Vienna, who found that WhatsApp’s contact-discovery system lacked proper rate limiting, allowing automated tools to check millions of phone numbers per hour. Through this gap, researchers were able to confirm whether a number was registered on

Internet & Technology

19 Nov 2025 09:07 AM 210 views

WhatsApp Flaw Exposed Phone Numbers And Photos Of 3.5 Billion Users, Say Researchers

A significant privacy issue in WhatsApp has come to light after researchers revealed that a long-standing flaw exposed the phone numbers and profile photos of nearly 3.5 billion users worldwide. The discovery was made by a team from the University of Vienna, who found that WhatsApp’s contact-discovery system lacked proper rate limiting, allowing automated tools to check millions of phone numbers per hour. Through this gap, researchers were able to confirm whether a number was registered on

Internet & Technology

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#whatsappleak

WhatsApp Flaw Exposed Phone Numbers And Photos Of 3.5 Billion Users, Say Researchers

WhatsApp Flaw Exposed Phone Numbers And Photos Of 3.5 Billion Users, Say Researchers

JioStar Invests $10B in Content, Beating YouTube’s $2.5B

Houston restaurant adds new burlesque dinner nights after strong public demand

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Texas Senate primary tightens as Cornyn, Paxton near runoff

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JioStar Invests $10B in Content, Beating YouTube’s $2.5B

Houston restaurant adds new burlesque dinner nights after strong public demand

Minneapolis Catholic School Shooting Leaves 20 Injured, Shooter Contained

Salman Khan Unveils Bigg Boss 19 Promo: New Theme Gharwalon Ki Sarkaar for a Power-Packed Season

School bus crash in Moorestown injures 10, including students, investigation underway

Sheikh Hasina Calls Yunus a "Fascist" Ahead of Bijoy Dibosh Celebrations

New Ninja Kidz Action Park opens with 20 attractions for families and kids

Yogeshwar Dutt Criticizes Vinesh Phogat for Paris Olympics Disqualification: "She Should Apologize"

Texas Senate primary tightens as Cornyn, Paxton near runoff

US Speaker Calls for Newsom to Be "Tarred and Feathered"

#whatsappleak

WhatsApp Flaw Exposed Phone Numbers And Photos Of 3.5 Billion Users, Say Researchers

WhatsApp Flaw Exposed Phone Numbers And Photos Of 3.5 Billion Users, Say Researchers

JioStar Invests $10B in Content, Beating YouTube’s $2.5B

Houston restaurant adds new burlesque dinner nights after strong public demand

Minneapolis Catholic School Shooting Leaves 20 Injured, Shooter Contained

Salman Khan Unveils Bigg Boss 19 Promo: New Theme Gharwalon Ki Sarkaar for a Power-Packed Season

School bus crash in Moorestown injures 10, including students, investigation underway

Sheikh Hasina Calls Yunus a "Fascist" Ahead of Bijoy Dibosh Celebrations

New Ninja Kidz Action Park opens with 20 attractions for families and kids

Yogeshwar Dutt Criticizes Vinesh Phogat for Paris Olympics Disqualification: "She Should Apologize"

Texas Senate primary tightens as Cornyn, Paxton near runoff

US Speaker Calls for Newsom to Be "Tarred and Feathered"

Popular Cities