produced by Classmethod

# セキュリティ articles

サイバーセキュリティの基礎知識から最新動向、対策事例まで、セキュリティに関する実践的な情報を発信しています。組織のセキュリティ強化に役立つ知見が満載です。

Claude Code v2.1.270 to v2.1.272 Key Updates - Sub-agent omitClaudeMd and permission-related fixes

2026.09.15

Claude Code v2.1.268 Major Updates - Task Management Tool Model-Specific Availability and Permission Rules Security Fix

2026.09.11

Isolating Execution Environments for Safe and Thorough Use of Claude Code: First Steps

かずえ@製造BT

2026.09.08

A Story About Trying to Streamline GuardDuty Detection Response with DevOps Agent #opsmethod Presentation Slides

2026.09.04

Claude Code v2.1.259 to v2.1.260 Major Updates - Addition of Diff Panel and Security Fix for Permission Rules

2026.09.04

I thought about how to determine organizational settings for Claude Enterprise, starting from security policy

2026.09.03

I checked what changed since Automated Security Response on AWS was updated to v4.0.0

2026.09.02

Claude Code v2.1.252 to v2.1.258 Key Updates - Fable 5.1 Addition and macOS 12 Launch Issue Fix

2026.09.02

Claude Code v2.1.248 Major Updates - Addition of --restricted to Limit Tools

2026.08.28

What I thought about when working on improvements to AWS account deletion operations - How to avoid local optimization and the "isolate then delete" Organizations separation method for deletion

2026.08.27

Claude Code v2.1.246 Major Updates - Bash Permission Rules Warning and API Key Destination Fix

2026.08.26

Claude Code v2.1.238~v2.1.239 Major Updates - Focused Improvements to Remote Control and Addition of keybindingFlavor Setting

2026.08.22

About Zendesk's Advance Notice of API Token Authentication Deprecation - How to Investigate the Impact Scope and Trying the OAuth Migration

越井琢巳 (Koshii Takumi)

2026.08.19

Claude Code v2.1.235 Major Updates - Addition of spellcheck settings and security fixes around permissions

2026.08.19

I tried using TPM to authenticate SSH to GitHub without placing the private key on disk

ふじい(大)@製造ビジネステクノロジー部

2026.08.17

A Story About Getting Stuck on Signature Verification for Twilio ConversationRelay WebSocket Communication

越井琢巳 (Koshii Takumi)

2026.08.15

A Story About Testing an IP-Restricted Environment with Claude in Chrome and FoxyProxy

越井琢巳 (Koshii Takumi)

2026.08.14

Claude Code v2.1.230 to v2.1.232 Major Updates - Sub-agent Fork Defaults and Cross-session Mentions

2026.08.14

LLM Watermarking: How It Works and Its Limitations

2026.08.13

必見の記事

Claude Code Self-Hosted Environment Feature Arrives: Trying an EC2 Instance as the Execution Environment

かずえ@製造BT

2026.08.12

Claude Code v2.1.225~v2.1.226 Major Updates - SendMessage Cross-Machine Origin Support and Authentication-Related Fixes

2026.08.08

Claude Code v2.1.224 Major Updates - Self-Hosted Environments and Cross-Session Messaging

2026.08.07

Claude Code v2.1.223 Major Updates - Permission Bypass Fix and /review Integration into /code-review

2026.08.06

Claude Code v2.1.222 Major Updates - Security fix for worktree isolation and removal of ultraplan

2026.08.05

Reducing Prompt Injection Risk with GitHub MCP Lockdown Mode

2026.08.05

Claude Code v2.1.220 to v2.1.221 Major Updates - Print Mode MCP Connection Fix and Permission Check Bypass Fix

2026.08.04

I tried the new IAM Policy Simulator feature "PolicyExclusionList"

2026.08.01

I tried the new AWS WAF feature "Parsed Text Transformation" using the CLI

2026.07.31

Use GitHub MCP in Read-only mode

2026.07.27

I tried the new Claude Code feature, the locally self-contained vulnerability scanner "Claude Security Plugin"

2026.07.26

The default cooldown period for Dependabot version updates is now 3 days.

2026.07.25

I tried the new Lambda Durable Functions feature "Encryption of Durable Execution Data"

2026.07.23

I tried Dynamic Label Interpolation with AWS WAF to test dynamic forwarding of bot information and custom block pages

2026.07.22

Claude Code v2.1.215 to v2.1.216 Major Updates - Addition of sandbox settings and faster long sessions

2026.07.21

I tried the new "UserIdentity filtering" feature of CloudTrail Network Activity Events

2026.07.21

I checked the ETag and SHA-256 of a file uploaded to S3 using multipart upload

越井琢巳 (Koshii Takumi)

2026.07.21