การรักษาความปลอดภัยของคอมพิวเตอร์ Jobs

Across my web applications, internal network infrastructure, desktop endpoints, company phones, and public social-media profiles, I need a full-scope security examination. The engagement must blend hands-on penetration testing with a structured security audit so that both technical weaknesses and policy gaps are captured in one clear deliverable. Scope • External and internal testing of web apps, network segments, desktops, mobile devices, and social-media assets • Manual and automated discovery using industry-standard tools such as Burp Suite, Nmap, Metasploit, Wireshark, Nessus, Kali Linux, and OSINT/social-engineering toolkits • Coverage of OWASP Top 10, SANS Top 25, common mobile attack vectors, and configuration hardening checks Deliverables • Comprehen...

My laptop just came back from the repair shop and before I put it back into daily rotation I want a thorough health check and a proper clean-up. What I expect from you • Run a complete hardware diagnostic on the battery and power supply, hard-drive / SSD, and the screen so I have clear confirmation that each component is stable and within spec. • Verify software health: check the operating system for errors, ensure all installed applications open and run smoothly, and confirm that security and antivirus protection are active, up to date, and scanning correctly. • Give the machine a careful physical cleaning—keyboard, vents, ports, and screen—so it looks and runs like new. • Provide a concise report of every test you performed, the tools you used (...

My Asus X1505Z, fitted with an M.2 SSD, is locked by BitLocker after a former employee enabled encryption and left without sharing the password or recovery key. I must regain full access to every file on the drive—there are no backups to fall back on—yet I would like the work carried out entirely through remote means. I do not have the PIN nor the recovery key for the laptop. The device was not a part of active directory and the person used his own Microsoft account. To my knowledge it is locked with PIN and TPM. I can allow remote access via Anydesk as i can boot it to Hiren or Medicat via usb. I am willing to obtain any required software in support of this recovery within reason (not more than the cost of the freelancer fee) If you have proven experience in Windows Bi...

I have a firewall, pen testing and research project assignment. Info for firewall assignment. LO2 Design, implement, analyse, configure & critique a system to a given set of network security requirements. LO3 Apply the analytical and practical skills needed to perform, assess, and reflect on security testing with reference to appropriate methodologies and frameworks Penalties for late submission of assessment You will be given a scenario of a network that you must secure. You must use principles of security to secure the network against potential threats. For the second part of the assessment, you will be expected to penetration test your secure network and reflect on the vulnerabilities, if any, that you have. Document your findings and rec...

I need help tightening the digital security around a growing library of photographs. My priority is data protection: the images must stay confidential, unaltered and accessible only to authorised users. Here’s what I’d like from you: • Assess the current storage workflow (local drives, cloud folders, backups) and identify vulnerabilities. • Propose and implement practical safeguards—encryption at rest/in transit, granular access controls, and tamper-evident measures. • Document every change so I can maintain the system long-term, including clear restoration steps if something ever goes wrong. If you have hands-on experience with secure photo archives, modern encryption standards (AES-256, TLS), and best-practice key management, I’d love to...

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I need a seasoned ethical hacker to perform a full-scale security audit of one of my production web applications. The primary goal is to uncover code-level vulnerabilities—anything from insecure input handling to flawed session management—and provide a clear remediation plan. While the audit may touch on broader OWASP issues, I’m specifically interested in how the current codebase could be exploited and what exact fixes will close those gaps. Here is how I see the engagement unfolding: • Conduct a thorough review of the live application and its underlying source code, using industry-standard tools such as Burp Suite, OWASP ZAP, static analysis utilities, and any custom scripts you rely on. • Deliver a detailed report that ranks each finding by severity, expl...

My home internet service is active, yet the network itself still needs to be organised so every desktop and laptop in the house connects smoothly and securely. I already have the modem-router and cabling; what I need is a specialist who can: • configure the router for optimum Wi-Fi and LAN performance • join two desktops and three laptops (Windows and macOS) to the same SSID and shared file/print resources • enable a basic firewall on the router, confirm each device’s built-in protection is on, and suggest any further light-weight security steps • test speeds, resolve dead zones, and document the final settings so I can maintain them later I’m happy to discuss the brand and firmware of the router before you start, and I can be on a video call durin...

I have a website and when running the PCI Compliance Report, 31 Vulnerabilities were found as well as 15 special notes. I need someone very experienced with this that can make the needed changes to pass the PCI scan.

I'm seeking a skilled cybersecurity professional to secure my devices. Someone has been infiltrating my macOS computer and iOS phone, and I need expert help to stop this. Key Requirements: - Secure my devices from unauthorized access - Identify and remove any existing malicious code - Provide a report on vulnerabilities - Recommend and implement security measures Ideal Skills and Experience: - Proven track record in cybersecurity - Expertise in macOS and iOS security - Strong knowledge of malware and intrusion detection - Ability to communicate technical details clearly Please ensure you have relevant certifications and experience.

I’m putting together a lightweight, consortium-based blockchain layer to decentralize the control plane of a software-defined vehicular ad-hoc network (VANET) for ddos attack. The architecture must place enhanced security front and center—specifically, it has to guarantee data integrity, robust authentication and strong privacy protection for every message that moves between vehicles, roadside units and cloud edges. Because we are working with a consortium blockchain, I expect permissioned membership management, rapid consensus and low latency that fits the tight timing windows of vehicular communication. Open public chains are off the table; the solution has to remain controllable by a defined set of stakeholders such as OEMs, infrastructure operators and municipalities. Her...

Vodafone circuit port 1 needs to be patched directly into the Fortinet firewall’s WAN interface at Siderno C.C. La Gru, Italy. The link is pure Ethernet, so the scope is limited to the physical layer: run or repatch the RJ-45 cable, secure both ends, power-cycle if necessary, and confirm the link LEDs come up on both the Vodafone hand-off and the FortiGate. Deliverables • Ethernet patch from Vodafone port 1 to Fortinet WAN • Photographic proof or brief confirmation showing link status (green LEDs or interface up) Teams link for remote support will be provided

I need an experienced systems professional who can take ownership of my production servers from the ground up. The job starts with a full audit of the existing Linux stack (Ubuntu 22.04 on AWS EC2), then moves into tightening every layer—optimising configuration, hardening services, and putting robust security controls in place. What matters most to me is confidence that the machines are patched, performance-tuned, and continuously protected. After the initial hardening you will set up real-time monitoring and alerting (Prometheus + Grafana is currently installed but not fully wired), document a clear maintenance schedule, and remain on hand for rapid incident response. Deliverables • Comprehensive audit report with recommended fixes • Implementation of agreed configu...

I’m ready to build a fresh network in Cisco Packet Tracer and need an expert hand to get the topology right. The job centres on designing the entire layout from scratch; routers and switches will form the backbone—no wireless gear this round. I haven’t locked down whether the final architecture should remain a simple LAN, scale into a WAN, or blend the two, so I’m counting on your insight to recommend the cleanest, most scalable approach once you review my requirements. Here’s what I’ll look for: • A working .pkt file with every device clearly labelled, configured, and cabled • Routing (static or dynamic), VLANs, basic security, and end-to-end connectivity demonstrated in the simulation • A concise document or set of notes that explai...

Title: Cybersecurity Specialist Needed to Identify and Eliminate Ongoing Device & Account Breach Description: I am looking for an experienced cybersecurity professional to help investigate and resolve a serious security issue. Last month, multiple personal accounts (including WhatsApp and other social platforms) and devices were compromised. Since then, I have: Switched to new devices Reset passwords and secured accounts Enabled basic security measures However, I still suspect unauthorized access or persistent compromise. There are concerns that my data may have been exposed or that a hidden vulnerability (malware, spyware, remote access, or account takeover method) still exists. Scope of Work: Perform a full security audit of devices and accounts Identify how the breach occurred...

I run a small construction company and want to build a long-term relationship with an external IT team that bills by the hour. My most pressing need is tightening our email defences, but you will also step in whenever we face issues with phone or computer security, malware, or any attempt at hacking. For email specifically, make sure your proposal shows how you will: • stop spam and phishing before it reaches our staff, • enable encrypted communications that are simple for non-technical users, • set up access controls and ongoing monitoring so we always know who touched what and when. Beyond email, outline the tools and processes you use to harden endpoints, secure mobile devices, and perform rapid incident response. A detailed project proposal explaining your approach, ti...

I’m expanding a full-stack cybersecurity practice and want a driven freelance closer who can own every step of the sales cycle, anywhere in the world. Your mission is simple: bring in new business for our penetration testing, security auditing, cloud security, infrastructure security, and API security services—and get paid on pure commission for every dollar you help us earn. What you’ll actually do • Identify and prospect ideal clients across any region that makes sense—North America, Europe, Asia, or elsewhere. • Run discovery calls, scope technical requirements with my engineering team, prepare proposals, and negotiate contracts until they’re signed. • Maintain your pipeline inside our CRM and deliver a concise report each week. How y...