点按 新增标签，建立新的标签名称与新增成员，或于新增成员中，将朋友加入已设定的标签内。

[one hundred and five] The threat of this attack might be mitigated by enabling Sign's Registration Lock aspect, a form of two-element authentication that needs the person to enter a PIN to sign-up the contact number on a whole new machine.[146]

[152][153] In July 2017, researchers from RUB observed during An additional Investigation of team messengers a purely theoretic assault versus the team protocol of Signal: A user who appreciates The trick team ID of a gaggle (due to getting been a group member Formerly or stealing it from a member's gadget) can become a member from the group. Since the group ID cannot be guessed and such member modifications are displayed to the remaining members, this assault is probably going being challenging to perform with no currently being detected.[154]

Based on John Ratcliffe, as of 2025 Sign is put in by default around the devices of most CIA workforce and its utilization is covered by conventional onboarding teaching.[111]

In July 2016, the online world Culture printed a person examine that assessed the ability of Sign end users to detect and deter person-in-the-middle assaults.[twenty five] The study concluded that 21 outside of 28 individuals failed to properly Evaluate general public crucial fingerprints in order to validate the identity of other Sign consumers, Which The majority of these users thought they had succeeded, even though they had in fact failed.

On nine August 2022, Ismail Sabri Yaakob, the Prime Minister of Malaysia, documented that his Sign account was "hacked" and infiltrated by a third party, sending out messages and impersonating the politician. No information were being disclosed regarding the strategy utilized to obtain use of the account.[215]

On 4 Oct 2016, the American Civil Liberties Union (ACLU) and Open up Whisper Units posted a number of paperwork revealing that OWS had obtained a subpoena requiring them to provide information associated with two phone quantities for just a federal grand jury investigation in the 1st 50 percent of 2016.[82][83][eighty four] Only among the list of two cell phone figures was registered on Signal, and since of how the assistance is made, OWS was only in a position to provide "some time the consumer's account had been created and the final time it had connected to the assistance".

I lastly obtained the chance to read through all of this much more carefully, and evidently all Cellebrite is executing is reading the texts off of a mobile phone they will now access. To [sic] this has nothing at all to carry out with Sign at all. So: in no way thoughts.

A year afterwards, from the runup to an finally barely attended sequel to Unite the proper in D.C., organizers appeared to stay off the platform, opting alternatively to discuss logistics in excess of Facebook Messenger as well as the encrypted texting app Signal. ^

创建安全群组，与朋友、家人和同事保持联系，同时享有所有隐私功能�?高级隐私功能

Employing phone figures as identifiers may also make security pitfalls that crop up from the potential of an attacker taking up a phone number.[142] An identical vulnerability was used to attack no less than 1 user in August 2022, however the assault was executed via the provider of Signal's SMS companies, not any consumer's service provider.

The team messaging system is designed so that the servers do not have entry to the membership checklist, group title, or group icon.

The claim that Signal is utilized to fund terrorist or legal things to do may be the justification for Turkey to criminalize the application for the general populace, which Abdullah Bozkurt Signal电脑版下载 promises is a way the "federal government abuses its counterterrorism laws to punish critics, opponents and dissidents."[243][244]

Signal takes advantage of mobile telephone figures to sign up and manage consumer accounts, while configurable usernames were additional in March 2024 to allow people to cover their cellphone figures from other end users.