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Computer Games
Breach intelligence, attack campaigns, and threat reports targeting the Computer Games sector.
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Computer Games Threat Reports
Tsundere Botnet: How Blockchain-Powered C2 Supercharged Windows-Based Attacks in 2025
In mid-2025, researchers identified a rapidly expanding botnet dubbed "Tsundere" specifically targeting Windows users. This malware, active since at least June 2025, leverages game-themed lures to infect systems, enabling attackers to execute arbitrary JavaScript code via a sophisticated command-and-control (C2) infrastructure built on the Ethereum blockchain for resilient communications. Tsundere’s propagation tactics remain opaque, but evidence indicates an advanced, multi-functional platform designed to maintain persistence, evade detection, and potentially facilitate lateral movement within victim networks. The business impact includes increased exposure to data theft, possible ransomware deployment, and widespread compromise of user endpoints. The Tsundere botnet exemplifies the rising trend of attackers exploiting blockchain technology for C2 communications, making conventional takedown efforts far more difficult. This incident underscores the urgency for organizations to enhance east-west threat visibility, strengthen endpoint defenses, and adopt zero-trust policies as botnets grow more evasive and robust.
6 months ago
Kill Chain
RedTiger Infostealer Attack Hits Discord Users in 2024
In early June 2024, cybersecurity researchers uncovered a new campaign in which attackers used a RedTiger-based infostealer to target Discord users. The campaign leveraged the open-source red-team tool RedTiger to build a custom infostealer designed to harvest Discord account credentials and stored payment information by injecting malicious code into Discord’s directories. Victims typically became infected through malicious downloads or phishing websites, unknowingly handing over sensitive data, including authentication tokens and payment details, to the attackers. As a result, stolen Discord accounts were sold or used for further fraud and account takeovers, risking both personal and organizational information leakage. This incident highlights an escalating trend of using open-source red-team tools for malicious infostealer campaigns, boosting attackers’ agility and reach. It underscores the risk of credential-based attacks on popular platforms, the need for real-time threat detection, and reinforces the importance of continuous endpoint monitoring and stronger egress security controls.
6 months ago
Kill Chain
Stealit Malware Abuses Node.js SEA in 2025 Infostealer Supply Chain Campaign
In October 2025, cybersecurity experts uncovered an active malware campaign involving Stealit, an advanced infostealer that exploits Node.js' Single Executable Application (SEA) feature to deliver its malicious payloads. The campaign also utilized the Electron framework and disguised its distribution through popular but trojanized game and VPN installers. Once executed, Stealit exfiltrated sensitive data from victims—such as credentials, browser information, and cryptocurrency wallets—using stealthy techniques while evading detection. The attack led to significant risks of account compromise and potential financial loss, particularly for organizations relying on affected software supply chains. This incident highlights a broader trend of attackers weaponizing modern development frameworks (like Node.js and Electron) to bypass traditional endpoint defenses. The use of legitimate-looking installers and supply chain manipulation signal an evolution in infostealer delivery tactics, making vigilance and advanced network segmentation crucial for organizational resilience.
6 months ago
Kill Chain
Zendesk's 2025 Email Bomb: How Lax Authentication Led to Mass Inbox Floods
In October 2025, a campaign exploited insecure ticket creation configurations across hundreds of Zendesk customer accounts, allowing attackers to bombard target inboxes with thousands of emails by abusing anonymous support workflows. Attackers submitted forged support requests via vulnerable Zendesk setups that lacked mandatory user authentication; as a result, victim inboxes were flooded with email notifications that appeared to originate from major brands like NordVPN, The Washington Post, and Discord. This distributed email flood (email bomb) compromised brand integrity, overloaded recipient systems, and created significant disruption for both targeted individuals and the affected organizations, highlighting the dangers of misconfigured application authentication and notification systems. Incidents like this reflect a rising trend in application-layer abuse, where attackers exploit lenient platform defaults and automated workflow triggers to amplify malicious campaigns. As business reliance on cloud-based customer service solutions increases, proper authentication and anti-abuse controls have become critical to both user and organizational protection.
6 months ago
Kill Chain
Aisuru Botnet’s Record DDoS Assaults Expose IoT Weaknesses in US ISPs
In October 2025, the Aisuru botnet orchestrated the largest recorded distributed denial-of-service (DDoS) attacks to date, leveraging over 300,000 compromised IoT devices primarily hosted on major U.S. ISPs such as AT&T, Comcast, and Verizon. The botnet, evolved from Mirai code, exploited insecure or outdated IoT firmware, driving attack volumes to nearly 30 terabits per second. Recurrent DDoS waves severely disrupted online gaming infrastructure and collateral users, overwhelming both DDoS mitigation providers and ISPs, and causing service dropouts and customer impact across multiple networks. This incident exemplifies the rising scale and sophistication of IoT-based botnets and exposes urgent deficiencies in outbound DDoS filtering at the ISP level. The Aisuru event also highlights a growing threat trend: attackers using compromised consumer IoT to reinforce both DDoS infrastructure and residential proxy networks, broadening attacker capabilities and the attack surface for businesses and critical providers.
6 months ago
Kill Chain
How a Breached BPO Account Led to Discord’s Massive 2025 Zendesk Data Breach
In late September 2025, attackers compromised a support agent account at an outsourced BPO provider and gained unauthorized access to Discord’s Zendesk support platform for 58 hours. Exploiting privileged access, they exfiltrated up to 1.6 TB of data, including approximately 8.4 million support tickets affecting 5.5 million users, with sensitive information such as emails, Discord IDs, phone numbers, partial payment data, and around 70,000 government-ID photos. The threat group leveraged integrations between Zendesk and Discord’s internal systems, extracted additional user details via APIs, and attempted a multimillion-dollar ransom before threatening public data release. This incident highlights the growing risk from third-party supply chain attacks targeting cloud-based customer support platforms and BPO providers. The attacker's tactics—abusing helpdesk integrations and privilege escalation—reflect broader cybercrime trends, including identity-driven attacks, data extortion, and rising regulatory scrutiny.
6 months ago
Kill Chain
Unity Game Engine Vulnerability 2025: Millions Exposed to Supply Chain Attacks
In October 2025, a significant supply chain vulnerability (CVE-2025-59489) was discovered in the Unity game engine, impacting applications built since version 2017.1 and endangering millions of global end-users. The flaw, identified by security researcher RyotaK, enables attackers to achieve arbitrary code execution or information disclosure by exploiting unsafe file loading mechanisms in the Unity Runtime component. Affected games include widely popular titles like Hearthstone, Fallout Shelter, and Doom (2019). Valve and Microsoft responded quickly, recommending users uninstall vulnerable games and developers patch or rebuild applications, while Unity issued updates and fixes for supported engine versions. This incident underscores the growing risks of supply chain vulnerabilities in modern software ecosystems, particularly as game engines and third-party frameworks become foundational across industries. The rapid coordinated response highlights heightened industry attention to upstream code security, as adversaries increasingly target widely deployed runtime components for maximum impact.
6 months ago
Kill Chain
Discord 2024 Breach: Third-Party Support Attack Exposes User Data
In early March 2024, Discord disclosed a data breach after threat actors compromised a third-party customer service provider’s systems. Attackers gained access to customer support tickets, exposing partial payment information, names, email addresses, and government-issued IDs of Discord users who had interacted with support. The breach occurred through unauthorized access to the provider’s internal systems, allowing exfiltration of sensitive, personally identifiable information linked to support requests. Discord promptly investigated, notified affected users, and terminated the third party’s access to its systems. This incident highlights the increasing risks associated with third-party vendors handling sensitive data, especially as social engineering and supply chain attacks become more common. Growing scrutiny from regulators and customers underscores the need for robust supply chain security and continuous monitoring of vendor access.
6 months ago
Kill Chain
Microsoft Warns: XCSSET macOS Malware Evolves to Target Xcode Devs in 2025
In September 2025, Microsoft Threat Intelligence identified a new, advanced variant of the XCSSET macOS malware targeting Xcode developers. This infostealer propagates by infecting Xcode projects—widely shared among software engineers—allowing it to execute malicious code each time a compromised project is built. The updated malware features enhanced browser data theft (including Firefox), clipboard hijacking to steal cryptocurrency via address swapping, and improved persistence mechanisms. Though observed only in limited, targeted attacks so far, XCSSET poses a significant risk to both assets and sensitive developer tooling. This incident is especially relevant today as targeting the software supply chain and developer toolchains is becoming a favored method for threat actors seeking high-privilege access. The sophistication of XCSSET’s mechanisms mirrors broader trends in stealthy, data-focused attacks against development environments, pressing organizations to reassess internal controls and software sharing practices.
6 months ago
Kill Chain
DDoS Tsunami: Tech Overtakes Gaming in 2025 Attack Surge
In early 2025, a wave of Distributed Denial-of-Service (DDoS) attacks targeting the technology sector marked a significant shift in cyberattack patterns, according to Gcore's Q1–Q2 2025 Radar report. Attack volumes surged by 41% year-on-year, with the largest observed DDoS flood peaking at 2.2 Tbps—surpassing previous records set in 2024. Threat actors employed multi-layered strategies and protracted campaigns, specifically targeting technology companies with sophisticated, high-bandwidth assaults that caused operational disruptions, service outages, and reputational harm across multiple organizations. This evolution reflects attackers’ growing technical prowess and focus on critical service providers. The incident is particularly relevant as the threat landscape pivots towards the tech sector and away from previous gaming-centric targets. This trend underscores broader risks for infrastructure providers and the need for adaptive DDoS defenses in the face of escalating attack complexity and regulatory expectations.
6 months ago
Kill Chain
Steam’s Platform Breached: BlockBlasters Game Used for Massive 2025 Crypto Theft
In September 2025, a verified Steam game, BlockBlasters, was discovered to have been weaponized to steal cryptocurrency from users, including a content creator raising money for cancer treatment. Initially benign, the game was compromised on August 30 with a cryptodrainer component that harvested Steam credentials, IP addresses, and ultimately drained victims’ digital wallets. Attackers targeted high-value accounts sourced from social media, using a mix of batch scripts, Python backdoors, and StealC payloads, leading to an estimated $150,000 in theft across hundreds of accounts. At least one streamer lost $32,000 in funds intended for lifesaving care. This incident exemplifies the growing threat of supply-chain and platform abuse, with attackers leveraging trusted app marketplaces to deliver infostealers. The BlockBlasters case underscores the urgent need for advanced egress security, anomaly detection, and zero trust controls, as attackers increasingly exploit digital trust and social media to orchestrate high-impact thefts.
6 months ago
Kill Chain
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