scans Archives

Tech Optimizer

June 4, 2025

Do I need an antivirus and a VPN?

Reliance on antivirus software for device protection is common, but certain threats, especially ransomware, can bypass even the best solutions. Cybercriminals have shifted tactics from encrypting data for ransom to exfiltrating sensitive information and threatening to leak it. The availability of ransomware kits and the use of AI by attackers have made cybercrime more accessible and targeted. Remote work environments increase vulnerabilities, as hackers exploit unsecured networks and personal devices. Antivirus software can help protect against malware and viruses, but built-in solutions often lack comprehensive security. A high-quality antivirus program can enhance protection through advanced features and AI. A Virtual Private Network (VPN) encrypts data and secures internet traffic, making it a valuable tool for cybersecurity. Implementing a VPN is cost-effective compared to potential data breach costs. Using both a VPN and antivirus software is essential for comprehensive coverage, as they address different security aspects. Businesses may need advanced endpoint protection solutions for heightened security, which continuously scans for suspicious behavior and integrates multiple security features. Despite these tools, proper personal practices and cybersecurity awareness are crucial to minimize vulnerabilities and human error, which is a leading cause of cyberattacks.

Tech Optimizer

June 3, 2025

I tested Bitdefender and McAfee in an antivirus software showdown, and here’s what I found

Bitdefender and McAfee are two leading antivirus software options known for robust malware protection and additional security features. Bitdefender achieves 98% effectiveness in real-time threat detection, while McAfee uses machine learning for threat identification but may produce false positives. Bitdefender offers a basic firewall, not available for macOS, whereas McAfee provides a more advanced firewall with device monitoring. Bitdefender has a standalone Digital Identity Protection service, while McAfee offers comprehensive identity theft protections in its Premium subscription. Bitdefender includes a VPN with a 200MB daily data cap, while McAfee provides unlimited VPN access but with fewer countries and features. Both offer password managers, but Bitdefender lacks two-factor authentication, while McAfee's True Key includes multi-factor authentication. Bitdefender’s parental controls are basic, while McAfee’s Safe Family includes location tracking. Bitdefender is known for lightweight performance, but recent tests suggest McAfee may have better system optimization. Both have user-friendly interfaces, with Bitdefender organizing features into tabs and McAfee offering a simpler design. In terms of protection, Bitdefender has a 98.7% detection rate, while McAfee excels online with 99.6% but struggles offline. Bitdefender's pricing starts at .99 for the first year, while McAfee's Basic plan starts at .99. Overall, Bitdefender is more budget-friendly, while McAfee offers advanced identity theft protection.

Tech Optimizer

June 3, 2025

I learned these 6 antivirus myths for PCs are completely wrong

Antivirus software on Windows was once essential due to security vulnerabilities, but built-in protection in Windows 8 and later versions often suffices for everyday use. Modern third-party antivirus applications are designed to be efficient and have minimal impact on system performance. All operating systems, including macOS, Linux, iOS, and Android, are susceptible to malware, contrary to the belief that only Windows needs antivirus protection. Manual virus scans are no longer necessary as modern solutions provide real-time monitoring. Antivirus software should be part of a broader security strategy that includes regular updates and secure online practices. Relying solely on cautious behavior is insufficient, as threats can emerge from various sources. Using antivirus software is still recommended, and users can complement built-in security features with third-party solutions.

Tech Optimizer

June 3, 2025

Malwarebytes Premium Security review

Malwarebytes, founded in 2004 by Marcin Kleczynski, is an independent cybersecurity company that provides effective malware protection globally. The Malwarebytes Premium Security suite includes antivirus, phishing and identity protection, and an unlimited VPN powered by Mullvad. Pricing for the one-year license for a single device is .99, while a five-device license costs .99, and a two-year plan is priced at .98. The Premium Security Ultimate plan offers full identity protection and credit monitoring for .99 for the first year, with renewal at 9.99. A limited free version is available that detects and removes existing threats but lacks real-time protection. The app features a straightforward design with a clear dashboard, prioritizing user experience. Malwarebytes focuses on efficient scanning of commonly infected areas, completing test scans in 13 minutes. However, it does not automatically scan removable drives and lacks a warning system for password-protected files. Independent lab testing is infrequent, but Malwarebytes has received an AVLab 'Product of the Year' award and demonstrated strong performance in MRG Effitas assessments. In practical tests, Malwarebytes effectively detected known malware but struggled with behavioral detection against custom ransomware. It includes anti-phishing features, initially blocking 16% of phishing sites, which improved to 62% with the BrowserGuard extension. The unlimited VPN offers encryption and privacy but has limitations in unblocking streaming services. The identity protection feature scans for breaches associated with user email addresses and Social Security Numbers for U.S. users.

Tech Optimizer

June 1, 2025

Supercharging vector search performance and relevance with pgvector 0.8.0 on Amazon Aurora PostgreSQL

The Amazon Aurora PostgreSQL-Compatible Edition has integrated support for pgvector 0.8.0, enhancing vector search capabilities significantly. This version achieves up to 9x faster query processing and delivers 100x more relevant search results compared to previous iterations. Key improvements in pgvector 0.8.0 include: - Up to 5.7x improvement in query performance for specific patterns. - Introduction of the iterative_scan feature, enhancing recall for filter queries requiring approximate nearest neighbor (ANN) index searches. - Improved cost estimation for more efficient query planning, allowing the selection of traditional indexes for complex filtered searches. - Flexible performance tuning with two modes for iterative_scan: relaxed_order and strict_order. Previous versions faced challenges with overfiltering, where combining vector similarity search with traditional SQL filters resulted in fewer results than expected. The HNSW indexing algorithm accelerates vector similarity searches by creating a multi-layered graph structure for efficient navigation. Iterative index scans in pgvector 0.8.0 improve query reliability and performance by applying filters during the scanning process, reducing false negatives and enhancing performance. The configuration options for iterative scanning include off, strict_order, and relaxed_order, with relaxed_order providing the best balance between performance and accuracy. In performance tests, pgvector 0.8.0 demonstrated substantial improvements across various query patterns, with significant enhancements in result completeness and recall. The database can now efficiently handle enterprise-scale applications, such as e-commerce and recommendation systems, with high performance and result quality even as product catalogs expand. Best practices for deploying pgvector 0.8.0 include using HNSW with recommended parameters, creating additional indexes on commonly filtered metadata columns, and tuning query parameters based on specific use cases. Operational best practices involve using Graviton4-based instances for optimal performance, monitoring and tuning slow vector queries, and considering partitioning for very large tables.

Tech Optimizer

May 30, 2025

Don’t get scammed! McAfee’s new AI tool sounds great, but you will need to pay for it

McAfee has integrated its Scam Detector feature into all core antivirus plans, achieving a 99% accuracy rate in identifying scams, including deepfakes on video platforms. The tool provides real-time scanning for text messages, emails, and video content on platforms like YouTube and TikTok, and extends protection to applications such as WhatsApp, Messenger, and Gmail. On Android, it automatically scans SMS messages, while iPhone users can perform manual scans. The feature includes customizable sensitivity settings and an on-demand check option for users to analyze messages or screenshots. Access to the Scam Detector requires a paid McAfee antivirus subscription. In contrast, Bitdefender offers a free tool called Scamio, which scans links, texts, screenshots, and QR codes for scams but does not detect video deepfakes. Google has developed an AI-based scam detector for Pixel phones that scans audio from incoming calls for scam language. Norton has also integrated its Genie Scam Protection into its plans, focusing on identifying scam language and requiring a subscription for comprehensive coverage. McAfee's Scam Detector is less accessible than free alternatives like Scamio.

Tech Optimizer

May 29, 2025

How to run an antivirus scan on your computer

When selecting antivirus software, understanding its functionality is crucial to ensure adequate protection. Running a virus scan involves opening the antivirus program, clicking the ‘Scan’ button, and allowing the software to operate. Automated scan schedules are important for consistent protection, especially during system startup to catch hidden malware. Key points for executing scans include avoiding heavy applications during the scan, utilizing the ability to pause scans, and ensuring laptops are charged and plugged in. During scans, the antivirus may identify potentially unwanted programs (PUPs), which should not be dismissed. After a scan, reviewing the results is essential, including threat names, severity ratings, affected files, and recommended actions. If threats are detected, correlating them with known vulnerabilities is advisable. Some malware may require a device restart or boot-time scanning for removal. Maintaining exportable logs can be beneficial for future reference. Post-scan, it is important to patch operating systems, change passwords if necessary, perform system backups, and establish a regular backup plan. Most antivirus programs offer features for automated scans and real-time protection, which should be utilized. Regular checks of reports are necessary to stay informed about device security. To maintain virus-free devices, users should avoid unknown links or email attachments, download software from legitimate sources, use strong passwords, back up important files, keep browsers updated, and enable multi-factor authentication. Regular virus scans are vital for safeguarding online presence and preventing performance issues.

Tech Optimizer

May 29, 2025

Antivirus alone won’t protect you: The real danger is social engineering

Social engineering is a manipulation tactic that exploits human trust to obtain sensitive information or access, posing a significant cybersecurity threat. Unlike traditional cyber threats that rely on malware, social engineering targets individuals through deception, often invoking emotions like fear or urgency. Common examples include fraudulent phone calls, phishing emails, and deceptive text messages. Antivirus software primarily protects against malware but is ineffective against social engineering attacks, which do not involve malicious code. The consequences of falling victim to such attacks can include financial losses, identity theft, and compromised networks. Effective defenses against social engineering include skepticism towards unsolicited contact, verifying requests independently, never disclosing sensitive information, using strong passwords, and enabling two-factor authentication. Awareness and education are crucial in combating these threats.

Tech Optimizer

May 28, 2025

Avast Premium antivirus review

Avast Premium is priced at .99 per year and offers a robust suite of security features without unnecessary bloatware. It allows users to back up sensitive files, search for personal data, and block unauthorized webcam access. The software includes quick scans, targeted folder scans, and boot-time scans. It features Email Guardian for scanning incoming messages, a sandbox mode for secure application use, and a banking mode for safe online transactions. A quick scan takes about three minutes, while a full boot sector scan takes approximately 12 minutes. Avast Premium identified around 900,000 files during testing, fewer than some competitors. It lacks comprehensive privacy protection and performance enhancement tools, which may require additional subscriptions. The interface is functional but lacks the sleekness of competitors. Support is available 24/7 via chat, with phone support primarily for billing inquiries and email support tickets for further assistance.

Tech Optimizer

May 28, 2025

PostgreSQL 18 Delivers Significant Performance Gains for OLTP and Analytics

PostgreSQL 18, set to debut in September, is currently in its Beta 1 phase and introduces new features aimed at enhancing analytics and transactional capabilities. Key improvements include asynchronous inputs for handling multiple read requests simultaneously, advancements in query optimization such as better handling of OR clauses and skip scans, and accelerated creation of Generalized Inverted Indexes (GINs) through parallel processing. The release also simplifies the integration of non-natively supported indices, allowing organizations to develop and adopt new indexes as extensions. Overall, PostgreSQL 18 is designed to improve performance for high-volume environments, particularly in cloud settings.