On July 27, 2026, JetBrains published a security advisory for CVE-2026-63077, a critical unsafe deserialization vulnerability affecting JetBrains TeamCity. An attacker who can reach a TeamCity server ...

A routine web application weakness has been tied to a serious Windows Server compromise after attackers used SQL injection to plant a remote-control toolkit inside an Oracle database. The incident ...

ログイン画面のプログラムを題材にして、SQLインジェクション攻撃の仕組みを学びましょう。 SQLインジェクションとは、ユーザーが入力した文字列をSQL文に直接つなげてしまうことで、開発者が意図していないSQL文に書き換えられてしまう攻撃です。

Javaを使用する中で、DBとのやりとりで躓くことが多い。 DBに関する知識は基礎となる技術であるため、理解しておく必要がある。 なので、今回はRDBMSからのデータの取得に焦点を当てて勉強していく。 JDBCとは？ JDBC（Java DataBase Connectivity）は、Javaで ...

Use Spring MVC MultipartFile, Java Path APIs and the browser fetch API to upload files asynchronously and save them safely on the server. See how to read an array's length, define its fixed size, ...

The Jakarta Persistence API (JPA) is a specification that defines a standardized framework for data persistence. Persistence is the fundamental mechanism for saving and retrieving data over time. In ...

Can you explain object-oriented programming to me like I'm 5 years old? Probably not. But here's a straightforward explanation of what OOP is ... Use Spring MVC MultipartFile, Java Path APIs and the ...

SQL injection represents one of the most persistent and dangerous web application vulnerabilities, consistently ranking among the top security threats in the OWASP Top 10. This comprehensive technical ...

Connection strings are widely used in management commands, in the Kusto API, and in Kusto Query Language (KQL) queries. Connection strings describe how to locate and interact with Kusto service ...

Object relational mappers, which are code libraries that connect object-oriented code to relational databases directly, serve as an alternative to SQL in some instances. ORMs are attractive because ...