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Avast Free Antivirus for US users: core features explained
Tech Optimizer
May 19, 2026

Avast Free Antivirus for US users: core features explained

Avast Free Antivirus is a free security application that provides essential malware protection and additional tools for Windows, macOS, Android, and iOS. It blocks malware and suspicious websites using real-time scanning and integrates with the operating system's security center on Windows. Key features include file shield scanning, web and mail shields, and ransomware-related shields on select platforms. It is available for free download in the US and is popular among home users, families, students, and individual professionals. Avast competes with other antivirus vendors like McAfee and Bitdefender and is often reviewed positively by tech outlets. While it offers core protections, advanced features require paid subscriptions. Users can conduct various types of scans and utilize browser extensions to assess site safety. The software is designed to coexist with Windows built-in security features, but experts advise using additional security measures for online banking and shopping.
Avast Antivirus free download and security basics
Tech Optimizer
May 17, 2026

Avast Antivirus free download and security basics

Avast Antivirus is a consumer-focused security application designed to detect and block malware, unsafe downloads, and dubious websites on personal computers. It employs local scanning and cloud-assisted analysis to assess files and URLs for known or suspicious patterns. The software operates background services that continuously monitor files and web traffic for harmful content on both Windows and Mac systems. Avast offers a free version for personal use, with optional paid upgrades, and provides English-language downloads and support specifically for US users. It is developed by Avast, part of Gen Digital, which is publicly traded on Nasdaq under the ticker GEN. Independent testing organizations like AV-Test and AV-Comparatives evaluate Avast Antivirus, positioning it among mainstream antivirus solutions.
New GhostLock tool abuses Windows API to block file access
Winsage
May 11, 2026

New GhostLock tool abuses Windows API to block file access

A security researcher has developed a proof-of-concept tool called GhostLock, which exploits a vulnerability in the Windows file API, specifically the 'CreateFileW' function. By manipulating the 'dwShareMode' parameter to grant exclusive access to files, GhostLock can prevent other users or applications from opening those files, resulting in a 'STATUSSHARINGVIOLATION' error. The tool automates the process of opening multiple files on SMB shares, causing access disruptions without requiring elevated privileges. This technique is intended as a disruption attack rather than a destructive one, similar to ransomware, and can serve as a diversion during intrusions. Detection of this attack relies on monitoring the open-file count with ShareAccess set to 0 at the file server layer. Dvash has provided resources for IT teams to enhance detection capabilities against this threat.
'People use smartphones more but invest less in their security': New report claims McAfee and Norton remain the most loved antivirus brands as users ditch lesser-known security products for free tools like Microsoft Defender or Apple Xprotect
Tech Optimizer
May 10, 2026

‘People use smartphones more but invest less in their security’: New report claims McAfee and Norton remain the most loved antivirus brands as users ditch lesser-known security products for free tools like Microsoft Defender or Apple Xprotect

Recent findings indicate that only 18% of American smartphone users invest in third-party antivirus software, despite the increasing reliance on mobile devices. A survey of over 1,000 adults revealed a significant gap in mobile security awareness. The adoption of paid antivirus solutions on computers has increased by 2% to 41%, while the use of third-party antivirus on mobile devices has decreased by approximately 10%, from 28% to 18%. Although ransomware attacks on smartphones are less common, many users may underestimate modern cyber threats. A considerable number of mobile users remain unprotected or unsure about their device security measures.
Avast Antivirus: What US Users Need to Know Right Now
Tech Optimizer
May 10, 2026

Avast Antivirus: What US Users Need to Know Right Now

Avast Antivirus is a widely used security tool for Windows, macOS, and Android in the U.S., functioning primarily as a real-time malware scanner that protects against threats like viruses and ransomware. The free version for Windows includes on-access scanning and web-shield protection, while paid versions offer additional features such as a firewall, ransomware shield, and VPN. On macOS, it focuses on malware detection and web protection, and on Android, it includes app-permission monitoring and device location features. Avast has faced criticism for its data-collection practices, particularly its past monetization of user data through a subsidiary, Jumpshot, which was discontinued in 2020. Despite improvements, it still collects telemetry and usage data. Avast is suitable for users looking for an easy-to-use antivirus solution at low cost, particularly those using Windows PCs for everyday tasks. However, it may not be ideal for privacy-conscious users or those with older hardware, as it can slow down system performance. Avast competes with other antivirus providers like Norton, McAfee, Bitdefender, and Kaspersky, each offering various features and performance levels. The company is a subsidiary of Gen Digital, which consolidates multiple cybersecurity brands, and its growth potential is influenced by user retention and regulatory scrutiny. Users should weigh their priorities regarding cost, privacy, and performance when deciding on antivirus solutions.
Norton (durch Symantec Übernahme teilweise verknüpft, aber Marke liegt bei Gen Digital. Broadcom i
Tech Optimizer
April 14, 2026

Norton (durch Symantec Übernahme teilweise verknüpft, aber Marke liegt bei Gen Digital. Broadcom i

Norton, owned by Gen Digital, provides antivirus software, VPN services, and identity theft monitoring to protect users from cyber threats such as malware and phishing attacks. The company emphasizes subscription-based revenue through Norton 360, which bundles various security features, ensuring predictable cash flow. Norton competes with other antivirus brands like McAfee and Bitdefender, maintaining a strong market share in North America due to its established brand trust. The demand for cybersecurity tools is driven by rising cyber threats, including ransomware attacks and increased remote work, which necessitate robust online protection. Gen Digital is investing in AI-driven threat detection and expanding its offerings to address evolving security needs. However, Norton faces challenges from free alternatives, potential privacy concerns, and macroeconomic pressures that could affect consumer spending on security products.
z3soft sets a new standard in the security market with next-generation integrated security solutions
Tech Optimizer
April 5, 2026

z3soft sets a new standard in the security market with next-generation integrated security solutions

z3soft is developing the Agentic Security Platform (ASP), which integrates large language models, antivirus solutions, and comprehensive file security to shift from passive to proactive cybersecurity measures. CEO Park Ju-seon highlights the need for a broader market strategy to address challenges in the domestic security market, which is dominated by a few players. The ASP aims to combine legacy security systems with AI technology for enhanced security management. z3soft is focusing on creating a 'cyber immunity' solution for AI environments, integrating Zero Trust principles for data protection. The company plans to foster an integrated security ecosystem through partnerships with smaller firms and aims to make advanced security solutions accessible to small and medium-sized enterprises (SMEs) via a subscription model. z3soft intends to validate its business model in Japan and the U.S. before introducing it to South Korea, with goals set for market entry by 2027 and the launch of zero-trust firewalls in Japan and an integrated security platform in the U.S. Park anticipates that significant changes in the domestic market may take five to ten years.
Attackers Use Malformed ZIP Archives to Evade Antivirus and EDR Tools
Tech Optimizer
March 11, 2026

Attackers Use Malformed ZIP Archives to Evade Antivirus and EDR Tools

Cybersecurity researchers at the CERT Coordination Center (CERT/CC) have identified a new evasion technique, VU#976247, used by threat actors to exploit malformed ZIP archives and bypass Antivirus (AV) and Endpoint Detection and Response (EDR) systems. Attackers manipulate the internal headers of ZIP files, particularly altering the compression method field, which causes security tools to fail in analyzing the malicious payload. While some security products may flag the modified files as corrupted, they often do not detect the underlying malicious code. Standard extraction tools typically trust the tampered metadata and may return errors, leaving the hidden payload undisclosed. Attackers use custom malware loaders to extract and execute the malicious data, circumventing traditional AV detection. Cisco has been confirmed as affected, while other vendors, including AhnLab, Avast, Bitdefender, and Avira, have an “Unknown” status regarding their vulnerability. To mitigate this threat, organizations should enhance archive handling processes, avoid relying solely on declared metadata, adopt aggressive detection modes, flag metadata inconsistencies, and consult with AV and EDR providers about vulnerabilities.
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