What type of attack might Myleene be dealing with if she notices failed login attempts with apostrophes in the email addresses?

When Myleene notices failed login attempts that include apostrophes in the email addresses, it is indicative of a SQL Injection attack. This type of attack occurs when an attacker is inputting malicious code into a field that is typically used for user input, such as a login form. The apostrophe is a common character in SQL Injection attacks, as it can be used to manipulate queries to the database.

In a SQL Injection scenario, the attacker may be trying to interfere with the way the application communicates with its database by altering the expected query structure. By inserting characters like apostrophes, an attacker can attempt to terminate a string or comment out existing query clauses, which can lead to unauthorized access or extraction of data from the database.

Recognizing these characteristics—such as unusual patterns in login attempts, especially the use of specific characters that are prominent in SQL syntax—is crucial for identifying a SQL Injection, as opposed to other attack types. While other options like CSRF, DoS, or ransomware represent different threats with distinct patterns and methods of operation, the specific mention of failed login attempts with apostrophes aligns closely with the tactics used in SQL Injection attacks.