Detail	Information
Company Name	Ericsson India Private Limited
Role/Position	Cybersecurity Intern
Duration	July 2024 - Present
Location	Noida, India
Offer Letter	‣
Tech Stack	Unix Systems, Kali Linux, Nmap, Wireshark, EJBCA, TLS/IP Configuration, OS Hardening, PKI, Encryption Algorithms, Hashing, CIA Testing
Company Website	https://www.ericsson.com/

Key Learning Areas

Gained hands-on experience working in secure Unix environments.
Learned to configure and audit system-level security settings.
Implemented hardening techniques like:
- Disabling unused services and ports
- Enforcing strong file permissions and ownership
- Configuring security modules like AppArmor/SELinux
Understood how to benchmark systems against standards like CIS Benchmarks.

Worked with EJBCA, an enterprise-grade Certificate Authority (CA), for managing digital certificates.
Understood the lifecycle of a certificate: creation, distribution, revocation, renewal.
Assisted in configuring internal PKI solutions for secure communications.
Gained exposure to certificate-based authentication and trust chains.

Studied common encryption standards such as AES, RSA, and ECC.
Applied symmetric and asymmetric encryption in securing data-in-transit and data-at-rest.
Worked with hashing algorithms (e.g., SHA-2, SHA-3) for data integrity checks.
Understood the implications of weak hash algorithms (e.g., MD5, SHA-1) and how to avoid them in secure systems.