What Filtering Does
Filtering prevents access to harmful content before it reaches the device. DNS-level filtering — the approach used by The Blocker — intercepts every internet request and blocks those that match harmful categories. Adult content, gambling sites, self-harm content, social media — filtered out at the network level before any content loads.
Filtering is preventive. It stops the problem before it happens. The child never sees the content. The parent never needs to intervene. It works silently and continuously.
The limitation of filtering is that it cannot see inside private messages. It can block Instagram — but if Instagram is allowed, it cannot read what your child is being sent in direct messages.
What Monitoring Does
Monitoring tools — like Bark — scan your child's messages, emails, and social media activity for warning signs of danger. They look for keywords and patterns associated with bullying, predatory contact, self-harm, and depression, then alert parents when something concerning is detected.
Monitoring is detective work. It finds problems after they have occurred, or as they are occurring. It gives parents visibility into the social dimension of their child's digital life that filtering cannot provide.
The limitation of monitoring is that it requires access to the content — and children who know they are being monitored may find ways around it, or may feel their privacy has been violated in ways that damage the parent-child relationship.
🔍 The key question: Are you trying to prevent your child from accessing harmful content — or trying to detect harmful situations in their social interactions? Often the answer is both.
Which Age Calls for Which Approach?
Younger children (under 12) benefit most from filtering. Their primary risk is accidental or intentional access to inappropriate content — pornography, violent content, gambling. Monitoring their private messages at this age is typically unnecessary and can feel invasive to children who are developing their sense of privacy.
Teenagers (13+) present a more complex picture. The content risks remain, but social risks — online predators, cyberbullying, self-harm communities — become equally important. Many families find that a combination of filtering and monitoring is appropriate at this stage.
The Case for DNS Filtering as the Foundation
Regardless of what monitoring approach a family chooses, DNS-level filtering is the most effective foundation for any child internet safety strategy. It works on every device, every browser, and every app — without anything installed on the child's device. It cannot be circumvented by switching browsers or using a private window.
Monitoring tools can be added on top. But filtering should come first.