C.Ellyson
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techwithellyson.bsky.social
C.Ellyson
@techwithellyson.bsky.social
AWS ☄️ cloud security engineer ☄️ cybersecurity specialist ☄️ Ethical hacker.
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Secrets belong in a vault.
Never hardcode credentials. Use AWS Secrets Manager or a centralized vault, rotate keys automatically, and restrict GetSecretValue to scoped roles only. Log accesses.
#SecretsManagement #SecretsManager #Security
November 11, 2025 at 8:01 AM
Protect apps with layered controls.
Use API Gateway + WAF + rate limiting + TLS + input validation. For web apps, map OWASP Top 10 to concrete controls (WAF rules for SQLi/XSS, CSP headers for XSS, auth for broken auth).
#AppSec #WAF #OWASP
November 10, 2025 at 4:01 PM
Practice makes posture — run regular red/blue drills.
Schedule tabletop exercises and controlled simulations (Pacu, Atomic Red Team) in a lab account. Use the findings to prioritize hardening and update runbooks. Repeat quarterly.
#RedTeam #BlueTeam #CloudSecurity
November 9, 2025 at 8:00 PM
Zero Trust is not a product — it’s a discipline.
Stop trusting “inside the network.” Verify identity, device posture, and context on every request. Start by enforcing MFA + conditional access for all privileged roles.
#ZeroTrust #CloudSecurity #MFA
November 9, 2025 at 3:02 PM
Make compliance continuous, not quarterly.
Enable AWS Config rules (or similar) to detect drift: public S3, unencrypted EBS, missing CloudTrail. Automate alerts to close the feedback loop.
#Compliance #AWSConfig #DevSecOps
November 9, 2025 at 8:00 AM
Detect early with multiple lenses.
Combine GuardDuty (threat intel), VPC Flow Logs (network), and CloudTrail (API). Correlate findings in Security Hub — don’t rely on one signal.
#ThreatDetection #GuardDuty #SecurityHub
November 8, 2025 at 8:00 PM
IAM least-privilege wins.
Grant roles the minimum permissions they need — nothing more. Use permission boundaries, IAM Access Analyzer, and role separation (no long-lived keys). Audit monthly.
#IAM #LeastPrivilege #AWS
November 8, 2025 at 1:07 PM
Logging and monitoring in web application
#logging #monitoring
November 8, 2025 at 8:00 AM
Network segmentation divides a web app’s infrastructure into isolated zones (DMZ, App, DB) — reducing lateral movement, improving visibility, and allowing safe, controlled testing environments that mirror production without risking real systems.
November 7, 2025 at 8:00 AM
Hashing + salting
November 6, 2025 at 8:01 PM
Encryption in web application
November 6, 2025 at 4:03 PM
Blockchain Security Quiz: Which protocol helps secure blockchain transactions?
A) Consensus mechanisms
B) HTTP
C) FTP
D) SSL/TLS
October 30, 2025 at 4:06 PM
Blockchain Security Quiz: What is multi-signature (multisig) for?
A) Creating multiple chains
B) Requiring multiple approvals for transactions
C) Multiplying rewards
D) Signing multiple blocks
October 28, 2025 at 8:03 PM
Blockchain Security Quiz: What is a 51% attack?
A) Hacking 51% of wallets
B) Controlling over half the network's mining power
C) Encrypting 51% of blocks
D) Adding 51% more nodes
October 28, 2025 at 4:05 PM
Blockchain Security Quiz: Which vulnerability affects smart contracts on Ethereum?
A) SQL injection
B) Cross-site scripting
C) Buffer overflow
D) Reentrancy attack
October 28, 2025 at 8:02 AM
Blockchain Security Quiz: What does 'private key' secure in blockchain?
A) Network consensus
B) Public ledger access
C) Ownership of assets
D) Block validation
October 27, 2025 at 8:02 PM
Blockchain Security Quiz: What's a common way to prevent double-spending?
A) Unlimited transactions
B) Centralized authority
C) Proof of Work
D) Anonymous users
October 27, 2025 at 4:03 PM
Blockchain Security Quiz: What is sybil attack in blockchain?
A) Modifying past blocks
B) Stealing private keys
C) Overloading the network
D) Creating multiple fake identities
October 27, 2025 at 8:00 AM
DevSecOps Engineer
Secure code pipelines! Blend DevOps & security. Tools: Entry: Jenkins, GitLab CI. Mid: Snyk, OWASP ZAP. Senior: Aqua Security, Prisma Cloud. 2025 automation rules! Your DevSecOps pick? Share! 🔧
October 26, 2025 at 8:01 PM
Blockchain Developer
Code the future! Build secure chains. Tools: Entry: Solidity, Remix. Mid: Truffle, Hardhat. Senior: Chainlink, Ethers.js. DeFi booming in 2025! Fave blockchain tool? 👇
October 26, 2025 at 3:02 PM
Network Engineer
Keep data flowing! Manage networks. Tools: Entry: Cisco Packet Tracer, GNS3. Mid: SolarWinds, Wireshark. Senior: SD-WAN, NetFlow. 5G drives 2025! Worst network fail?
October 26, 2025 at 8:01 AM
Cloud Engineer
Cloud conqueror! Deploy scalable apps. Tools: Entry: AWS CLI, Docker. Mid: Kubernetes, Ansible. Senior: Helm, Istio. 90% orgs cloud-bound in 2025! Top cloud tool? Share! ☁️
October 25, 2025 at 8:01 PM
AI/ML Engineer
Train AI to think! Build smart models. Tools: Entry: Python, TensorFlow. Mid: PyTorch, Jupyter. Senior: Kubeflow, ONNX. AI ethics hot in 2025! What's your AI stack? Tell us! 🧠
October 25, 2025 at 4:02 PM
Security Engineer
Build fortress tech! Secure systems w/ Zero Trust. Tools: Entry: AWS IAM, Firewall CLI. Mid: Terraform, Palo Alto. Senior: HashiCorp Vault, Zscaler. Cloud's king in 2025! Fave tool? Drop it! 🛡️
October 25, 2025 at 8:01 AM
Incident Responder
Breach buster! Investigate & recover. Tools: Entry: Autopsy, FTK Imager. Mid: EnCase, Volatility. Senior: XDR platforms, SANS SIFT. Ransomware's spiking—ready? Share a forensics win! 🕵️
October 24, 2025 at 8:01 PM