Unit 6 — 5-minute revision
- B2B: business→business (wholesale); B2C: business→consumer (Amazon, Flipkart); C2C: consumer→consumer (OLX, eBay); C2B: consumer→business (freelancers selling services)
- E-payment modes: credit/debit cards, net banking, UPI, mobile wallets, e-cheques; NEFT: batch settlement; RTGS: real-time large transfers; IMPS: instant 24×7; UPI: instant phone-based (NPCI, 2016)
- IT Act 2000 (amended 2008) — India's cyber law; Sec 43: unauthorized access/damage to computer; Sec 66: hacking as per 43 = imprisonment; Sec 66C: identity theft; Sec 66D: cheating by impersonation (phishing); Sec 67: publishing obscene content
- Cyber crimes: hacking (unauthorized access), phishing (fake mails stealing data), malware/virus, spam, cyber stalking, online fraud, ransomware (locks data for ransom)
- Safety: strong passwords, OTP secrecy, firewall, antivirus, avoid public Wi-Fi for banking
🔥 High-yield: 66C = identity theft, 66D = cheating by impersonation, 67 = obscene content; IT Act 2000 (amended 2008); phishing = fake mails; C2C = OLX/eBay.
| Term | Full form |
|---|---|
| B2B / B2C | Business to Business / Consumer |
| C2C / C2B | Consumer to Consumer / Business |
| NEFT | National Electronic Funds Transfer |
| RTGS | Real Time Gross Settlement |
| IMPS | Immediate Payment Service |
| UPI | Unified Payments Interface |
| NPCI | National Payments Corporation of India |
| OTP | One Time Password |