Security Best Practices

**1. Data Validation: Always validate data on the server side to prevent malicious data from being saved.

**2. Use Meteor’s check Package: For validation:

import { check } from 'meteor/check';

Meteor.methods({
  'createUser': function (user) {
    check(user, {
      username: String,
      email: String
    });
    // Proceed with user creation
  }
});

**3. Limit Publications: Only publish the data needed by the client to avoid exposing sensitive data.

Meteor.publish('userData', function () {
  return Meteor.users.find({}, { fields: { profile: 1, emails: 1 } });
});