diff --git a/webapp/src/Controller/API/ClarificationController.php b/webapp/src/Controller/API/ClarificationController.php
index 397e2e499b..d0c82ca002 100644
--- a/webapp/src/Controller/API/ClarificationController.php
+++ b/webapp/src/Controller/API/ClarificationController.php
@@ -8,6 +8,7 @@
 use App\Entity\ContestProblem;
 use App\Entity\Team;
 use App\Utils\Utils;
+use DateTime;
 use Doctrine\ORM\NonUniqueResultException;
 use Doctrine\ORM\QueryBuilder;
 use Exception;
@@ -208,6 +209,17 @@ public function addAction(
             } else {
                 throw new BadRequestHttpException('A team can not assign time.');
             }
+        } elseif ($this->isGranted('ROLE_API_WRITER') && $contest->getStartTime() > $time) {
+            $startTime = $contest->getStarttimeString();
+            $startTimeTimeZone = DateTime::createFromFormat('Y-m-d h:i:s e', $startTime)->getTimezone();
+            $now = DateTime::createFromFormat('U.u', (string) $time);
+            $now->setTimezone($startTimeTimeZone); // We can't the timezone in createFromFormat as it always picks UTC.
+            throw new BadRequestHttpException(
+                "Sending a clarification before the contest can disclose restricted information, "
+                . "provide an explicit time when this clarification should be visible. "
+                . "For the start of this contest: " . $contest->getStarttimeString() . ", "
+                . "for the current time: " . $now->format('Y-m-d H:i:s e') . "."
+            );
         }
 
         $clarification->setSubmittime($time);
@@ -297,6 +309,14 @@ protected function getQueryBuilder(Request $request): QueryBuilder
             }
         }
 
+        // For non-API-reader users, only expose the problems after the contest has started.
+        // `WF Access Policy` allows for clarifications before the contest, but not to disclose the problem
+        // so referencing them in clarifications would violate referential integrity.
+        if (!$this->dj->checkrole('api_reader')) {
+            $queryBuilder->andWhere('c.starttime < :now OR clar.problem IS NULL')
+                ->setParameter('now', Utils::now());
+        }
+
         if ($request->query->has('problem')) {
             $queryBuilder
                 ->andWhere('clar.problem = :problem')
diff --git a/webapp/src/Controller/Jury/ClarificationController.php b/webapp/src/Controller/Jury/ClarificationController.php
index 4eda5224e2..e8a9711095 100644
--- a/webapp/src/Controller/Jury/ClarificationController.php
+++ b/webapp/src/Controller/Jury/ClarificationController.php
@@ -34,6 +34,22 @@ public function __construct(
         protected readonly EventLogService $eventLogService
     ) {}
 
+    private function warnClarificationBeforeContestStart(): void
+    {
+        $cc = $this->dj->getCurrentContest();
+        $message = "Generic clarifications are visible before contest start.";
+        if ($cc && $cc->getStartTime() > Utils::now()) {
+            $this->addFlash('warning', $message);
+        } elseif (!$cc) {
+            foreach ($this->dj->getCurrentContests() as $cc) {
+                if ($cc->getStartTime() > Utils::now()) {
+                    $this->addFlash('warning', $message);
+                    return;
+                }
+            }
+        }
+    }
+
     #[Route(path: '', name: 'jury_clarifications')]
     public function indexAction(
         #[MapQueryParameter(name: 'filter')]
@@ -41,6 +57,7 @@ public function indexAction(
         #[MapQueryParameter(name: 'queue')]
         string $currentQueue = 'all',
     ): Response {
+        $this->warnClarificationBeforeContestStart();
         $categories = $this->config->get('clar_categories');
         if ($contest = $this->dj->getCurrentContest()) {
             $contestIds = [$contest->getCid()];
@@ -116,6 +133,7 @@ public function indexAction(
     #[Route(path: '/{id<\d+>}', name: 'jury_clarification')]
     public function viewAction(Request $request, int $id): Response
     {
+        $this->warnClarificationBeforeContestStart();
         $clarification = $this->em->getRepository(Clarification::class)->find($id);
         if (!$clarification) {
             throw new NotFoundHttpException(sprintf('Clarification with ID %s not found', $id));
@@ -239,6 +257,7 @@ public function composeClarificationAction(
         #[MapQueryParameter]
         ?string $teamto = null,
     ): Response {
+        $this->warnClarificationBeforeContestStart();
         $formData = ['recipient' => JuryClarificationType::RECIPIENT_MUST_SELECT];
 
         if ($teamto !== null) {
diff --git a/webapp/src/Controller/Team/MiscController.php b/webapp/src/Controller/Team/MiscController.php
index 1ad3d4e7a1..d304264ad7 100644
--- a/webapp/src/Controller/Team/MiscController.php
+++ b/webapp/src/Controller/Team/MiscController.php
@@ -5,13 +5,13 @@
 use App\Controller\BaseController;
 use App\DataTransferObject\SubmissionRestriction;
 use App\Entity\Clarification;
-use App\Entity\Language;
 use App\Form\Type\PrintType;
 use App\Service\ConfigurationService;
 use App\Service\DOMJudgeService;
 use App\Service\EventLogService;
 use App\Service\ScoreboardService;
 use App\Service\SubmissionService;
+use App\Utils\Utils;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\NonUniqueResultException;
 use Doctrine\ORM\NoResultException;
@@ -92,8 +92,7 @@ public function homeAction(Request $request): Response
                 paginated: false
             )[0];
 
-            /** @var Clarification[] $clarifications */
-            $clarifications = $this->em->createQueryBuilder()
+            $qb = $this->em->createQueryBuilder()
                 ->from(Clarification::class, 'c')
                 ->leftJoin('c.problem', 'p')
                 ->leftJoin('c.sender', 's')
@@ -105,9 +104,12 @@ public function homeAction(Request $request): Response
                 ->setParameter('contest', $contest)
                 ->setParameter('team', $team)
                 ->addOrderBy('c.submittime', 'DESC')
-                ->addOrderBy('c.clarid', 'DESC')
-                ->getQuery()
-                ->getResult();
+                ->addOrderBy('c.clarid', 'DESC');
+            if (!$this->dj->checkrole('jury') && $contest->getStartTimeObject()->getTimestamp() > time()) {
+                $qb->andWhere('c.problem IS NULL');
+            }
+            /** @var Clarification[] $clarifications */
+            $clarifications = $qb->getQuery()->getResult();
 
             /** @var Clarification[] $clarificationRequests */
             $clarificationRequests = $this->em->createQueryBuilder()
diff --git a/webapp/src/Twig/TwigExtension.php b/webapp/src/Twig/TwigExtension.php
index 60df1de6cc..8fd2d2428d 100644
--- a/webapp/src/Twig/TwigExtension.php
+++ b/webapp/src/Twig/TwigExtension.php
@@ -205,13 +205,16 @@ public function printelapsedminutes(float $start, float $end): string
      * Print a time formatted as specified. The format is according to date().
      * @param Contest|null $contest If given, print time relative to that contest start.
      */
-    public function printtime(string|float|null $datetime, ?string $format = null, ?Contest $contest = null): string
+    public function printtime(string|float|null $datetime, ?string $format = null, ?Contest $contest = null, bool $squash = false): string
     {
         if ($datetime === null) {
             $datetime = Utils::now();
         }
         if ($contest !== null && $this->config->get('show_relative_time')) {
             $relativeTime = $contest->getContestTime((float)$datetime);
+            if ($relativeTime < 0 && $squash) {
+                return "Before contest";
+            }
             $sign         = ($relativeTime < 0 ? -1 : 1);
             $relativeTime *= $sign;
             // We're not showing seconds, while the last minute before
diff --git a/webapp/templates/team/partials/clarification_list.html.twig b/webapp/templates/team/partials/clarification_list.html.twig
index daa60a8b53..c2f3169d13 100644
--- a/webapp/templates/team/partials/clarification_list.html.twig
+++ b/webapp/templates/team/partials/clarification_list.html.twig
@@ -23,7 +23,7 @@
             <tr class="{% if team.unreadClarifications.contains(clarification) %}unseen{% endif %}">
                 <td>
                     <a data-ajax-modal data-ajax-modal-after="markSeen" href="{{ link }}">
-                        {{ clarification.submittime | printtime(null, clarification.contest) }}
+                        {{ clarification.submittime | printtime(null, clarification.contest, true) }}
                     </a>
                 </td>
                 {%- if clarification.sender is null %}
diff --git a/webapp/templates/team/partials/clarifications_team.html.twig b/webapp/templates/team/partials/clarifications_team.html.twig
new file mode 100644
index 0000000000..6b805b6c38
--- /dev/null
+++ b/webapp/templates/team/partials/clarifications_team.html.twig
@@ -0,0 +1,22 @@
+{% if clarifications is not empty or always_display %}
+    <h1 class="teamoverview">Clarifications</h1>
+    {% if clarifications is empty %}
+        <p class="nodata">No clarifications.</p>
+    {% else %}
+        {% include 'team/partials/clarification_list.html.twig' with {clarifications: clarifications} %}
+    {% endif %}
+{% endif %}
+
+<h1 class="teamoverview">Clarification Requests</h1>
+{% if clarificationRequests is empty %}
+    <p class="nodata">No clarification request.</p>
+{% else %}
+    {% include 'team/partials/clarification_list.html.twig' with {clarifications: clarificationRequests} %}
+{% endif %}
+
+<div class="m-1">
+    <a href="{{ path('team_clarification_add') }}" class="btn btn-secondary btn-sm" data-ajax-modal data-ajax-modal-after="initModalClarificationPreviewAdd">
+        Request clarification
+    </a>
+</div>
+
diff --git a/webapp/templates/team/partials/index_content.html.twig b/webapp/templates/team/partials/index_content.html.twig
index 34c7ca453c..eb65ca2820 100644
--- a/webapp/templates/team/partials/index_content.html.twig
+++ b/webapp/templates/team/partials/index_content.html.twig
@@ -6,6 +6,8 @@
     <h2 id="contestnotstarted" class="text-center">
         Contest {{ contest | printContestStart }}
     </h2>
+
+    {% include 'team/partials/clarifications_team.html.twig' with {'always_display': false} %}
 {% else %}
 
     <div id="teamscoresummary">
@@ -26,26 +28,9 @@
 
             {% include 'team/partials/submission_list.html.twig' %}
         </div>
-        <div class="col">
-            <h1 class="teamoverview">Clarifications</h1>
-            {% if clarifications is empty %}
-                <p class="nodata">No clarifications.</p>
-            {% else %}
-                {% include 'team/partials/clarification_list.html.twig' with {clarifications: clarifications} %}
-            {% endif %}
 
-            <h1 class="teamoverview">Clarification Requests</h1>
-            {% if clarificationRequests is empty %}
-                <p class="nodata">No clarification request.</p>
-            {% else %}
-                {% include 'team/partials/clarification_list.html.twig' with {clarifications: clarificationRequests} %}
-            {% endif %}
-
-            <div class="m-1">
-                <a href="{{ path('team_clarification_add') }}" class="btn btn-secondary btn-sm" data-ajax-modal data-ajax-modal-after="initModalClarificationPreviewAdd">
-                    Request clarification
-                </a>
-            </div>
+        <div class="col">
+            {% include 'team/partials/clarifications_team.html.twig' with {'always_display': true} %}
         </div>
     </div>
 {% endif %}