What is the main issue with email protocols regarding security?
They do not have a lot of security checks built into the protocols themselves
This makes emails vulnerable to spoofing.
What does it mean when an email is spoofed?
The name on the email is not the person who actually wrote the email.
Who is primarily concerned about email spoofing?
Individuals, corporations, and other organizations.
What device often decides whether an email is legitimate?
Mail gateway.
What is a Sender Policy Framework (SPF) record?
It defines which email servers are authorized to send mail on behalf of a domain.
How is an SPF record added to a DNS server?
As a text, or TXT, record.
What happens when a third party receives an email from a domain with an SPF record?
The third party’s email gateway checks the domain’s DNS server to verify the sender’s authorization.
What is DKIM?
Domainkeys Identified Mail Record.
What does DKIM provide for outgoing emails?
Digital signatures that can be validated from a DKIM record in DNS.
Where can you find the DKIM signature?
In the headers of the email.
What does DMARC stand for?
Domain-based Message Authentication, Reporting, and Conformance.
What does a DMARC record specify?
What to do with emails that do not validate.
What actions can be specified in a DMARC record?
- Accept all messages
- Send to spam folder
- Reject emails.
What is a benefit of DMARC regarding compliance reports?
It allows the receiver to create reports on message validation.
What information is included in DMARC compliance reports?
How many messages validated properly and how many did not.
What format is a DMARC record added to the DNS server?
As a TXT or text record.
What can a domain owner do with DMARC reports?
Get insights on how many emails are received properly and how many may be spoofed.
Fill in the blank: The mail gateway serves as the _______ of all the mail for your organization.
gatekeeper.
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1.1 Security Control Types and Categories31
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1.2 The CIA Triad: A Study Guide22
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1.2 Digital Signatures: Ensuring Integrity and Origin - Study Guide25
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1.2 AAA Framework and Authorization26
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1.2 IT Security Gap Analysis: A Comprehensive Study23
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1.2 Zero Trust Networks and Adaptive21
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1.2 Physical Security Controls: Methods and Technologies26
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1.2 IT Security Deception and Disruption: Honeypots, Honeyfiles, and Honeytokens18
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1.3 Formal Change Control Processes: A Study Guide21
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1.3 The Technician's Role in Change Control Implementation33
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1.4 Cybersecurity Cryptography: Encryption and Public Key Infrastructure23
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1.4 Data Encryption and Its Algorithms31
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1.4 Secure Key Exchange Methods22
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1.4 Cryptography's Guardians: TPM, HSM, and Secure Enclaves10
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1.4 Obfuscation and Hidden Data Techniques21
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1.4 Cryptographic Hashes and Digital Signatures25
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1.4 Blockchain Essentials21
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1.4 Digital Certificates18
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2.1 Understanding Threat Actors18
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2.2 Navigating Threat Vectors and Attack Paths26
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2.2 The Art of Phishing: Recognizing and Avoiding Scams17
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2.2 The Impersonation Playbook: Scams, Fraud, and Prevention18
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2.2 Cybersecurity Fundamentals: Watering Hole Attacks and Layered Defense20
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2.2 The Digital Deception Playbook24
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2.3 Malware Memory Injection: Understanding the Threat20
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2.3 Buffer Overflow Attacks23
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2.3 Race Conditions and TOCTOU Attacks20
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2.3 Secure Software Updates32
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2.3 Operating System Patching15
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2.3 Understanding Code and SQL Injection Attacks19
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2.3 Code Injection Attack20
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2.3 Understanding Cross-Site Scripting (XSS) Attacks27
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2.3 IoT Firmware and Device Lifecycle Security17
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2.3 Virtual Machine Security Vulnerabilities21
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2.3 Cloud Security: Understanding Threats and Vulnerabilities31
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2.3 Supply Chain Security and Third-Party Risk29
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2.3 Cybersecurity Vulnerabilities and Countermeasures25
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2.3 Mobile Device Security: Risks and Countermeasures17
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2.3 Zero-Day Vulnerabilities and Attacks23
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2.4 Understanding Malware26
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2.4 Understanding Computer Viruses and Worms27
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2.4 Digital Intruders: Spyware and Bloatware19
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2.4 Cybersecurity Threats: Keyloggers, Logic Bombs, and Rootkits22
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2.4 DNS Poisoning and URL Hijacking27
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2.4 Wireless Network Attacks: Deauthentication and RF Jamming22
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2.4 Denial of Service (DoS) and Distributed Denial of Service (DDoS) Attacks21
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2.4 On-Path and Man-in-the-Middle Attacks21
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2.4 Replay Attacks and Session Hijacking24
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2.4 Malicious Code Attacks and Defenses17
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2.4 Application Security Fundamentals20
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2.4 Cryptography's Vulnerabilities28
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2.4 Password Hashes and Brute Force Attacks24
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2.4 Indicators of Compromise and Security Best50
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2.5 Network Segmentation and Access17
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2.5 Cybersecurity Mitigation Techniques and Best Practices29
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2.5 System and Endpoint Hardening Fundamentals28
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3.1 Cloud Infrastructure11
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3.1 Network Isolation, Virtualization, and Cloud Infrastructure22
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3.1 IT Security Considerations and Infrastructure Technologies24
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3.1 IT Infrastructure and Operational Resilience16
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3.2 Network Security Zones and Attack Surfaces23
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3.2 Intrusion Prevention and Detection Systems21
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3.2 Network Appliances:16
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3.2 Port Security25
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3.2 Network Firewall Concepts23
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3.2 Secure Network Communication Technologies (VPN, SD-WAN, and SASE)20
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3.3 Data Types and Classifications17
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3.3 States of Data, Security, and Sovereignty19
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3.3 Data Protection Methods and Security Techniques22
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3.4 High Availability and Resilience Architectures18
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3.4 Cryptography's Vulnerabilities: Birthday Attacks and SSL Stripping19
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3.4 A Beginner's Guide to Keeping Systems Running: Understanding Disaster Recovery16
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3.4 Backup Strategies and Recovery21
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3.4 Data Center Power and Backup Systems16
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4.1 Application Security Baselines and Deployment10
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4.1 System and Device Hardening22
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4.1 Wireless Site Surveys and Mobile Device Management21
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4.1 Wireless Network Security Protocols and Authentication17
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4.1 Application Security Development and Testing24
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4.2 Asset Management26
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4.3 Vulnerability Scanning15
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4.3 Threat Intelligence17
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4.3 Penetration Testing20
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4.3 Analyzing Vulnerabilities19
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4.3 Vulnerability Remediation17
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4.4 Security Monitoring21
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4.4 Security Tools37
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4.5 Firewalls32
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4.5 Web Filtering22
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4.5 Operating System Security11
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4.5 Secure Protocols14
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4.5 Email Security18
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4.5 Monitoring Data19
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4.5 Endpoint Security27
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4.6 Identity and Access Management29
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4.6 Access Controls17
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4.6 Multifactor Authentication17
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4.6 Password Security18
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4.7 Scripting and Automation27
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4.8 Incident Response20
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4.8 Incident Planning17
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4.8 Digital Forensics17
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4.9 Log Data31
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5.1 Security Policies18
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5.1 Security Standards20
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5.1 Security Procedures24
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5.1 Security Considerations17
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5.1 Data Roles and Responsibilities10
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5.2 Risk Management14
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5.2 Risk Analysis20
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5.2 Risk Management Strategies24
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5.2 Business Impact Analysis12
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5.3 Third-party Risk Assessment24
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5.3 Agreement Types12
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5.4 Compliance20
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5.4 Privacy15
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5.5 Audits and Assessments11
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5.5 Penetration Tests18
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5.6 Security Awareness19
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5.6 User Training22
