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Two Sigma: Cybersecurity Incident
Two Sigma was targeted in a social engineering campaign by threat actor UNC6671, in which attackers impersonated IT help desk staff via phone calls to employees' personal devices, attempting to steal credentials and MFA tokens for unauthorized cloud access.
Source: PYMNTS
- Who
- Two Sigma · USA
- What happened
- Two Sigma was targeted in a social engineering campaign by threat actor UNC6671, in which attackers impersonated IT help desk staff via phone calls to employees' personal devices, attempting to steal credentials and MFA tokens for unauthorized cloud access.
- When
- 2026-08-07
- Source
- PYMNTS
- So what
- A breach is a governance event before it is a technical one.
The leadership read
A breach is a governance event before it is a technical one. For Two Sigma in the sector, the hiring consequence is rarely more engineers; it is senior accountability, security, risk and data governance reporting high enough to change decisions. Across Americas, watch whether the response is a hire or a contractor; that distinction says how the board has read it.
Market context: Against a Talent Market Index of 97.6 (Neutral) (down 3.4 month-on-month), Americas is at easing (-15.6pts) on signal share.
Two Sigma: 1 signal in the last 90 days; 2 tracked across 73 days.
MitchelLake in this thematic
Also at Two Sigma →
More signals across Americas
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CIRO →CIRO, Canada's investment self-regulatory organization, faces a proposed $8.3 million settlement over a data breach affecting 750,000 Canadians, including credit monitoring and up to $10,000 reimbursement per claimant.
Cybersecurity Incident · Americas
Across Protocol →Across Protocol, a cross-chain bridge protocol, is investigating a potential security incident affecting its domain; users report drained wallets after interacting with the platform and the protocol has told users to avoid the app.
Cybersecurity Incident · Americas
The Vanguard Group, Inc. →A reported data breach at The Vanguard Group may have exposed investors' Social Security numbers. The disclosure comes via a plaintiff-side law firm's investigation announcement, so the breach is not yet confirmed by the company in this source.
Cybersecurity Incident · Americas
Amplifon Americas →Hackers stole personal, health, and insurance information, including Social Security numbers, from Amplifon Americas' internal systems, affecting about 1.3 million people.
Cybersecurity Incident · Americas
Vanderbilt University →Vanderbilt University announced a cyberattack that may have impacted campus devices and systems, with students and employees warned.
Cybersecurity Incident · Americas
York University →York University disclosed a breach in which a threat actor stole personal information submitted through its online forms, with records reaching back to 2007.
Where this lands in our work
- Executive Search →
A breach puts the security, technology and risk seats under review; those searches run through our executive search practice.
- Executive Search: Americas →
Our Americas practice runs the searches behind signals like this one.
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