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Strategic insights on blockchain, AI, security, leadership, and career in an age of disruption.

AI Voice Phishing: Why Your Defenses Face the Wrong Direction
September 04, 2026·7 min read
AI

AI Voice Phishing: Why Your Defenses Face the Wrong Direction

AI voice-cloning has fundamentally reversed phishing attacks—now criminals call employees impersonating trusted leaders, exploiting help desk processes instead of technical vulnerabilities.

Recent Essays

#blockchain security

118 posts

When Crypto Pivots Hide Security Failures
August 13, 2026

When Crypto Pivots Hide Security Failures

How Humanity Protocol's $36M hack and pivot to AI mirrors Mt. Gox's decline. What real accountability looks like in blockchain leadership.

Humanity Protocol's $36M Hack: Why Pivots Aren't Recovery
August 13, 2026

Humanity Protocol's $36M Hack: Why Pivots Aren't Recovery

When crypto security failures lead to pivots instead of remediation, it's a red flag. Learn what real blockchain governance recovery requires.

The $285M Handshake: Why Trust is Your Biggest Security Risk
July 10, 2026

The $285M Handshake: Why Trust is Your Biggest Security Risk

North Korea's Drift Protocol hack exploited trusted relationships, not code vulnerabilities. Learn how social engineering bypassed blockchain security and what it means for your defenses.

Quantum Breakthrough: When Q-Day Moves From 2035 to 2032
June 19, 2026

Quantum Breakthrough: When Q-Day Moves From 2035 to 2032

Google's redacted quantum optimization and independent verification collapse the timeline for cryptographic migration. Post-quantum cryptography is no longer theoretical—it's urgent infrastructure planning.

Crypto Sub-Ledgers: The Black Box Risk
May 27, 2026

Crypto Sub-Ledgers: The Black Box Risk

Crypto companies install sub-ledger systems but rarely hire owners for them—creating audit vulnerabilities when complex blockchain accounting decisions go undocumented.

Bitcoin's Principle Problem: When Governance Kills the Moat
May 04, 2026Opinion

Bitcoin's Principle Problem: When Governance Kills the Moat

BIP-361 exposes Bitcoin's vulnerability: the moment unconditional ownership becomes debatable, the core principle—and the entire investment thesis—fundamentally changes.

DeFi Security Failures: When Guidelines Aren't Enforced
April 21, 2026

DeFi Security Failures: When Guidelines Aren't Enforced

Kelp DAO's $292M loss reveals why security checklists fail: published guidance without enforcement is just a prayer. Learn what financial leaders must verify before DeFi exposure.

Post-Quantum Cryptography: The Migration Already Started
March 13, 2026

Post-Quantum Cryptography: The Migration Already Started

Apple, Signal, and Chrome deployed NIST post-quantum standards in 2024. The canary didn't die—it migrated. Here's why leaders can't ignore this shift.

Quantum Computing's Three Paths to 2029
February 27, 2026

Quantum Computing's Three Paths to 2029

IBM, Microsoft, and Google converge on fault-tolerant quantum by 2029. Three technical approaches, same timeline—what enterprise leaders need to know.

Why Crypto's Perfect Math Fails at Human Error
February 11, 2026Opinion

Why Crypto's Perfect Math Fails at Human Error

Blockchain's immutability is both its greatest strength and fatal weakness. Learn why cryptographic perfection without human factors engineering creates catastrophic risk at scale.

Why Smart Contract Security Requires Economic Design
February 05, 2026Opinion

Why Smart Contract Security Requires Economic Design

DeFi exploits reveal the real vulnerability isn't code quality—it's economic incentives. Learn why legal action proves decentralization failed.

SMS Security Crisis: Why Crypto Scams Keep Working
October 23, 2025

SMS Security Crisis: Why Crypto Scams Keep Working

Explore how blockchain technology and cryptographic signatures can solve SMS-based crypto scams—and why user behavior, not technology, remains the real barrier.

Blog — Blockchain, AI & Leadership Strategy | Jay Schulman