AITA for not giving my sister my SIN number when she said the CRA will arrest her?
What would you do if a family member demanded sensitive personal information, claiming it’s a matter of avoiding jail? A 17-year-old faced this unsettling situation when her older sister insisted on getting her Social Insurance Number (SIN) for alleged tax issues. The request raised red flags, especially given the sister’s secretive relationship and shifting explanations.
The teen’s instincts screamed scam, backed by advice from her mom and friends. Social media users echoed her concerns, warning of fraud and urging caution. This story highlights the challenge of balancing family loyalty with self-protection when trust feels shaky.

‘AITA for not giving my sister my SIN number when she said the CRA will arrest her?’
The story starts with the teen’s relationship with her sister and her sister’s secretive boyfriend.


The conflict emerges when the sister demands sensitive personal information.


The sister’s persistence and changing stories heighten the teen’s concerns about fraud.


The teen faces pressure but refuses to comply, fearing legal consequences for herself.

The core issue is a teen’s refusal to share her Social Insurance Number (SIN) with her sister, who claims it’s needed to avoid jail time. The sister’s high-pressure tactics and inconsistent explanations triggered distrust, especially given her request for their deceased father’s SIN. The teen’s fear of fraud reflects a protective instinct, while the sister’s behavior suggests desperation or manipulation.
The teen’s caution stems from a need for self-preservation, heightened by her sister’s secrecy about her relationship. The sister’s insistence, coupled with dubious claims about the CRA, indicates possible deceit or influence from her boyfriend. Communication broke down when the sister used fear instead of transparency, alienating the teen.
Psychologist Dr. Lindsay Gibson notes, “Healthy boundaries protect your identity and safety, especially when trust is uncertain” (Adult Children of Emotionally Immature Parents, 2015). The teen’s refusal aligns with this, prioritizing her security over unverified claims.
The teen should verify any CRA requests directly by calling the agency using official contact information. She could also discuss concerns with her mother to set firm boundaries with her sister. Checking her credit report regularly can prevent potential fraud.
Here’s what the community had to contribute:
Social media erupted with warnings about the sister’s request, splitting into three groups: those labeling it a clear scam, those offering practical advice to verify with the CRA, and a few speculating on the sister’s motives or relationship dynamics.Most commenters urged the teen to protect her SIN, citing obvious scam red flags.








Some provided steps to verify the request and protect the teen’s information.





A few questioned the sister’s intentions or her boyfriend’s influence.






This story reveals the importance of guarding personal information, even from family. The teen’s refusal to share her SIN protected her from potential fraud, despite her sister’s alarming claims. Trust, once broken, requires clear boundaries to rebuild. The sister’s vague, high-pressure tactics highlight how fear can cloud judgment, while the teen’s caution shows maturity.
Would you share sensitive information with a family member under pressure? How do you balance trust in family with protecting your own security?
