Secunia has a free Secunia Weekly Advisory Summary newsletter. You need to register for an account at https://secunia.com/community/profile/ and tick a box for a weekly summary IIRC.
But it's probably easier and more convenient to subscribe for announce mailiing lists for software you're using. Unless you can turn off affected services or scramble and patch before maintainers.
But it's probably easier and more convenient to subscribe for announce mailiing lists for software you're using. Unless you can turn off affected services or scramble and patch before maintainers.