In December, Psiphon blogged about a previous blocking event in Brazil, available here.
Psiphon use surged again in Brazil in response to another nationwide suspension of WhatsApp
messaging service. On May 2nd, Brazilian state judge Marcel Maia Montalvão issued an order to
block WhatsApp for 72 hours. The judge is seeking user data from WhatsApp as part of a criminal
investigation. The five main mobile operators were ordered to block the messaging service, beginning
at Monday at 2 p.m. local time.
In response to the recent suspension of WhatsApp services, company CEO Jan Koum posted a message
to Facebook
 stating, “Yet again millions of innocent Brazilians are being punished because a court wants
WhatsApp to turn over information we repeatedly said we don’t have. Not only do we encrypt messages
end-to-end on WhatsApp to keep people’s information safe and secure, we also don't keep your chat history
on our servers. When you send an end-to-end encrypted message, no one else can read it – not even us.”
The suspension was overturned by another judge on Tuesday following an appeal from WhatsApp’s lawyers,
allowing WhatsApp to resume services in Brazil.
In March, Judge Montalvão ordered the arrest of Facebook executive Diego Dzodan on charges
of obstructing justice after WhatsApp failed to deliver messages subpoenaed in the criminal investigation.
A day later, an appeals judge overturned that order and Dzodan was released. Although WhatsApp is
owned by Facebook Inc, the two companies operate separately.
During a press conference that followed, Dzodan stated that WhatsApp is unable to turn over the data
because it doesn’t store users’ messages after they’ve been delivered. In addition, the messaging service
uses end-to-end encryption and messages cannot be intercepted.
Using Psiphon, Brazil’s WhatsApp users were able to retain or restore access to the application. The Psiphon
user base in Brazil tripled within the first 24h of the ban. Brazil’s Globo news network recommended Psiphon
to circumvent the blocking.

This case demonstrates that in response to censorship, blocking, and other restrictions,
Internet users will turn to known tools that connect them to content and to each other. 
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