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Incident

Hong Kong securities brokers

Incident posture

Attack window
Jan 2017
Location
Hong Kong
Status
Historical
CIA posture
Available to members
Updated
2025-12-08 00:00

Linked entities

Victim
Hong Kong securities brokers
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Jan 2017
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

Hong Kong securities brokers experienced distributed denial of service (DDoS) attacks targeting their websites, causing temporary service disruptions, while criminals simultaneously attempted extortion through blackmail demands. The city's securities regulator warned that similar cyber incidents could potentially affect the broader industry, citing increased threats observed regionally. The attacks involved overwhelming targeted systems with malicious traffic from compromised computers. Authorities urged financial firms to strengthen defenses by reviewing IT infrastructure and implementing specific mitigation strategies against such disruptions.

Motives

Detailed motive labels are available to members.

1 motive

TTPs

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1 technique

Description

On January 26, 2017, Hong Kong’s Securities and Futures Commission (SFC) publicly disclosed that multiple securities brokers in the city had been targeted by distributed denial-of-service (DDoS) attacks. The regulator issued a circular to licensed firms after receiving information from the Hong Kong police, confirming that attackers had disrupted broker websites by overwhelming them with malicious traffic, causing temporary service interruptions. Concurrently, affected brokers received blackmail demands from the perpetrators, though the specific ransom amounts or payment methods were not disclosed. These incidents occurred against a backdrop of escalating cyber threats in the region, with a November survey cited by regulators revealing a 969% surge in detected attacks against firms in Hong Kong and mainland China between 2014 and 2016. The SFC characterized the disruptions as lasting for "a short period" but did not specify the exact duration or identify the targeted firms.

The SFC warned the securities industry to anticipate similar attacks across the sector, emphasizing the need for heightened vigilance. In response to the incidents, the regulator mandated that all licensed entities implement immediate protective measures, including comprehensive reviews of their IT infrastructure and the development of DDoS mitigation strategies. This directive aligned with broader regulatory efforts underway since 2016 to strengthen cybersecurity defenses within Hong Kong’s financial sector. While the attacks did not compromise customer data or transaction systems according to available reports, they disrupted online services critical to brokerage operations. The SFC’s notification underscored the operational vulnerability of financial institutions to DDoS attacks while avoiding detailed commentary on investigation progress or attribution of responsibility for the attacks.

Sources

Sources available to members: 1 source.

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