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Insider threats don’t need to break in — they’re already inside. And in 2025, the most damaging breaches aren’t coming from advanced malware or nation-state actors… but from trusted employees, contractors, and partners with legitimate access. Today, let’s break down Insider Threat Security: how to detect it early, how to control it effectively, and what operational practices actually reduce the risk.    🔎 What Exactly Is an Insider Threat? An *insider threat* occurs when someone with authorized access — intentionally or accidentally — misuses that access to harm an organization’s systems, data, or operations. This includes: * Malicious insiders (theft, sabotage, fraud) * Negligent insiders (accidental data leaks, misconfigurations) * Compromised insiders (accounts taken over by attackers)  🧭 1. Detection Strategies: How to Identify Insider Threats Early Insider threats rarely look like traditional cyberattacks. They blend into normal activity. That means detection must focus on behavior, not just signatures.     🔍 ✔ User & Entity Behavior Analytics (UEBA) Machine learning to detect anomalies such as: * Unusual login times * Abnormal data access * Sudden privilege escalations * Large data transfers outside business hours  🧪 ✔ Data Loss Prevention (DLP) Monitoring DLP tools track and alert on: * Unauthorized file uploads * Copying sensitive data to USB * Emailing confidential documents outside the organization     🎯 ✔ Privileged Access Monitoring Admins and developers have the highest-risk accounts. Use: * Session recording * Real-time alerts for privilege misuse * Keystroke logging (where lawful)     🌐 ✔ Multi-Context Correlation Combine logs from: * SIEM * Endpoint * Cloud platforms * Identity platforms Insider threats are detected through patterns, not single events.   🛡️ 2. Access Controls: Reducing the “Opportunity” for Insider Risk No detection strategy matters if access is too broad or unchecked.     🔑 ✔ Zero Trust Access “Never trust, always verify.” Every request is authenticated, authorized, and logged — even from internal users.     🎚️ ✔ Least Privilege Principle Give users the minimum access needed for their job. Nothing more.     ⏳ ✔ Just-In-Time Access (JIT) Provide elevated privileges only when needed and only for a short duration.     🔐 ✔ Strong Authentication Controls * MFA for all users * Hardware tokens for privileged accounts * Continuous authentication for critical systems     📦 ✔ Segmentation & Access Boundaries Separate critical systems so no single insider can access everything.   🏭 3. Operational Controls: Strengthening Your Insider Threat Defense     📚 ✔ Security Awareness Training Employees must recognize risky behaviors, phishing attempts, and data handling policies.     📝 ✔ Clear Policies & Consequences Define: * Acceptable use * Data handling rules * Access control procedures Make expectations unambiguous.     🧩 ✔ Vendor & Third-Party Risk Management Insiders aren’t just employees — contractors and partners also pose risk.     📏 ✔ Regular Access Reviews Remove dormant accounts and unnecessary privileges.     👀 ✔ Continuous Monitoring Insider threat detection is not a one-off project. It’s a continuous operational discipline.  🚀 Takeaway: Insider Risk Is Not a Technical Problem — It’s an Operational One Organizations that win against insider threats don’t rely on a single tool. They combine:   Behavior analytics + strong access controls + continuous monitoring + a human-aware security culture. Insider threats may be silent, but their signals are loud — when you know what to look for. #Cybersecurity #ThreatDetection #SIEM #EthicalHacking
Insider threats don’t need to break in — they’re already inside. And in 2025, the most damaging breaches aren’t coming from advanced malware or nation-state actors… but from trusted employees, contractors, and partners with legitimate access. Today, let’s break down Insider Threat Security: how to detect it early, how to control it effectively, and what operational practices actually reduce the risk. 🔎 What Exactly Is an Insider Threat? An *insider threat* occurs when someone with authorized access — intentionally or accidentally — misuses that access to harm an organization’s systems, data, or operations. This includes: * Malicious insiders (theft, sabotage, fraud) * Negligent insiders (accidental data leaks, misconfigurations) * Compromised insiders (accounts taken over by attackers) 🧭 1. Detection Strategies: How to Identify Insider Threats Early Insider threats rarely look like traditional cyberattacks. They blend into normal activity. That means detection must focus on behavior, not just signatures. 🔍 ✔ User & Entity Behavior Analytics (UEBA) Machine learning to detect anomalies such as: * Unusual login times * Abnormal data access * Sudden privilege escalations * Large data transfers outside business hours 🧪 ✔ Data Loss Prevention (DLP) Monitoring DLP tools track and alert on: * Unauthorized file uploads * Copying sensitive data to USB * Emailing confidential documents outside the organization 🎯 ✔ Privileged Access Monitoring Admins and developers have the highest-risk accounts. Use: * Session recording * Real-time alerts for privilege misuse * Keystroke logging (where lawful) 🌐 ✔ Multi-Context Correlation Combine logs from: * SIEM * Endpoint * Cloud platforms * Identity platforms Insider threats are detected through patterns, not single events. 🛡️ 2. Access Controls: Reducing the “Opportunity” for Insider Risk No detection strategy matters if access is too broad or unchecked. 🔑 ✔ Zero Trust Access “Never trust, always verify.” Every request is authenticated, authorized, and logged — even from internal users. 🎚️ ✔ Least Privilege Principle Give users the minimum access needed for their job. Nothing more. ⏳ ✔ Just-In-Time Access (JIT) Provide elevated privileges only when needed and only for a short duration. 🔐 ✔ Strong Authentication Controls * MFA for all users * Hardware tokens for privileged accounts * Continuous authentication for critical systems 📦 ✔ Segmentation & Access Boundaries Separate critical systems so no single insider can access everything. 🏭 3. Operational Controls: Strengthening Your Insider Threat Defense 📚 ✔ Security Awareness Training Employees must recognize risky behaviors, phishing attempts, and data handling policies. 📝 ✔ Clear Policies & Consequences Define: * Acceptable use * Data handling rules * Access control procedures Make expectations unambiguous. 🧩 ✔ Vendor & Third-Party Risk Management Insiders aren’t just employees — contractors and partners also pose risk. 📏 ✔ Regular Access Reviews Remove dormant accounts and unnecessary privileges. 👀 ✔ Continuous Monitoring Insider threat detection is not a one-off project. It’s a continuous operational discipline. 🚀 Takeaway: Insider Risk Is Not a Technical Problem — It’s an Operational One Organizations that win against insider threats don’t rely on a single tool. They combine: Behavior analytics + strong access controls + continuous monitoring + a human-aware security culture. Insider threats may be silent, but their signals are loud — when you know what to look for. #Cybersecurity #ThreatDetection #SIEM #EthicalHacking

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