Atlassian Founder's Wife Allegedly Ordered Executive to Download Confidential Files
The wife of Atlassian co-founder Mike Cannon-Brookes stands accused of instructing a senior executive to download and hand over sensitive company secrets during the couple's high-profile marriage breakdown. Court documents reveal explosive allegations about the handling of confidential information within the billionaire's family investment company.
Financial Controller Caught in Marriage Fallout
Kevin Chiu, who served as group financial controller and company secretary for Cannon-Brookes Services until February last year, allegedly became entangled in the bitter aftermath of the couple's separation in July 2023. The marriage had lasted thirteen years before its dramatic collapse.
A statement of claim filed with the Supreme Court of New South Wales accuses Mr Chiu of leaking hundreds of confidential documents to Annie Cannon-Brookes during this turbulent period. The documents reportedly included sensitive employee HR files containing personal information about staff members.
Defence Claims Instructions Came from Wife
While Mr Chiu admits to downloading 966 confidential files, his defence presents a startling counter-argument. He claims Annie Cannon-Brookes explicitly told him to obtain the documents, and he complied believing it formed a normal part of his employment duties.
The allegations specify that on or about November 14, 2024, Mr Chiu downloaded employment contracts, remuneration and bonus details, resumés, tax and superannuation records, medical certificates, visa and police check details, and committee minutes. These comprehensive HR files allegedly contained deeply personal information about employees.
Alleged Sharing of Confidential Information
Court documents further allege that between December 20, 2024 and January 10, 2025, Mr Chiu shared these HR files with both Annie Cannon-Brookes and former CBC chief financial officer Catherine Manuel. The company additionally accuses him of leaking invoices, bank statements, US tax details concerning sports team investments by Cannon-Brookes Entertainment Group, and particulars of financial dealings with Grok Investments.
Mr Chiu has categorically denied the core breach allegations, maintaining that providing access to Annie Cannon-Brookes did not constitute unauthorised disclosure. He insists his actions fell within the scope of his professional responsibilities.
Employment Contract and Legal Violations
According to the statement of claim, Mr Chiu was employed from May 18, 2020 until February 4 last year. Cannon-Brookes Services alleges he violated his employment contract, which required him to maintain strict confidentiality, use information solely for performing his duties, and avoid any usage that could harm the company, its officers, employees, or the Cannon-Brookes family.
The company further accuses Mr Chiu of breaching his statutory duty under the Corporations Act. This legislation prohibits company officers from improperly using corporate information to gain advantages for themselves or others, or to cause detriment to the company.
Termination and Legal Proceedings
During a meeting with new CFO Faris Cosic on February 4 last year, Mr Chiu allegedly admitted to the HR files conduct. The company responded by issuing a 'Deliver Up Direction' requiring him to return all devices and provide passwords and access codes. Mr Chiu reportedly refused this demand via text message.
Cannon-Brookes Services terminated Mr Chiu's employment on February 4 last year and commenced legal proceedings against him on February 18. The company is seeking damages and indemnity costs for the alleged breaches. Meanwhile, Mr Chiu has filed a counter-claim seeking financial compensation arising from interim court orders.
Broader Context of Business Challenges
This legal action unfolds against a backdrop of significant challenges for Mike Cannon-Brookes and his software company Atlassian. The technology billionaire recently suffered an almost $1 billion reduction in net worth as competitors developed new artificial intelligence tools that threaten his business software products.
Atlassian's shares plummeted eight percent on the NASDAQ last week, dropping to US$68.17 (AU$97.43). This represents more than a two-thirds decline from the stock's peak of US$242 (AU$345.88) within the previous fifty-two weeks. The decline followed major AI product updates from tech competitors including Amazon and San Francisco-based Anthropic.
From Romance to Legal Battle
The current legal drama contrasts sharply with the couple's earlier public displays of affection. Mike Cannon-Brookes had previously expressed his devotion to his partner in a series of enthusiastic social media posts. When he proposed in 2009, he tweeted: 'GOT ENGAGED THIS WEEKEND! The gorgeous Miss Annie said yes!'
The couple married in 2010 and accumulated an impressive property portfolio worth nearly $300 million as Mike Cannon-Brookes ascended the ranks of Australia's wealthiest individuals. Their most extravagant purchase remains the 1.1-hectare Fairwater estate in Sydney's exclusive Point Piper, acquired in 2018 for approximately $100 million, making it Australia's most expensive residential property at the time.
Additional properties included a $14.25 million home in Newport on Sydney's northern beaches, a neighboring $24.5 million estate purchased in 2020, and a $2.55 million fisherman's cottage at Great Mackerel Beach, accessible only by boat. The couple expressed their intention to raise their four children in these historic properties, filling them with love and laughter through the years.
